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    Free Online Apps

    193+ powerful tools for health, finance, images, PDFs, and more. Free to use and runs in your browser.

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    BMI Calculator

    Calculate your Body Mass Index with WHO health categories and personalised insights.

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    BMR Calculator

    Find your Basal Metabolic Rate, the calories your body burns at rest every day.

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    Calorie Calculator

    Calculate your daily calorie needs based on your age, activity level, and goals.

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    Body Fat Calculator

    Estimate body fat percentage using multiple methods: Navy, BMI, and more.

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    Ideal Weight Calculator

    Find your healthy weight range using Devine, Robinson, Miller, and Hamwi formulas.

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    Macro Calculator

    Get personalised protein, carb, and fat targets based on your calorie goal.

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    Pace Calculator

    Calculate running pace, speed, and split times for any distance and time.

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    One Rep Max Calculator

    Estimate your one-rep max (1RM) for any lift using multiple proven formulas.

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    Lean Body Mass Calculator

    Calculate your lean body mass (fat-free mass) using Boer and James formulas.

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    Due Date Calculator

    Estimate your pregnancy due date from your last menstrual period or conception date.

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    Pregnancy Calculator

    Track your pregnancy week by week. See milestones, trimester progress, and baby size.

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    Conception Calculator

    Estimate when conception likely occurred based on your due date or LMP.

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    Water Intake Calculator

    Calculate your recommended daily water intake based on weight, activity, and climate.

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    Calories Burned Calculator

    Estimate calories burned during 25+ exercises and daily activities using MET values.

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    Protein Intake Calculator

    Find your optimal daily protein intake for muscle gain, weight loss, or general health.

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    Sleep Calculator

    Find the best times to sleep and wake up based on 90-minute sleep cycles.

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    Weight Loss Calculator

    Plan your weight loss with personalised calorie targets, timelines, and goal dates.

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    TDEE Calculator

    Calculate your Total Daily Energy Expenditure using Mifflin-St Jeor and Harris-Benedict.

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    Carbohydrate Calculator

    Calculate your optimal daily carb intake based on TDEE, activity level, and dietary goals.

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    Fat Intake Calculator

    Find your recommended daily fat intake for balanced, low-fat, high-fat, or keto diets.

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    Healthy Weight Calculator

    Find your healthy weight range based on height using WHO BMI standards.

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    Target Heart Rate Calculator

    Calculate your personalised exercise heart rate zone using the Karvonen method.

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    VAT & Sales Tax Calculator

    Add or remove VAT/Sales Tax instantly. Supports UK, USA, and UAE tax rates.

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    Profit Margin Calculator

    Calculate profit margin, markup, and selling prices. Multi-currency support.

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    Hourly Rate Calculator

    Convert your annual salary to hourly rate. Perfect for freelancers and contractors.

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    Take-Home Pay Calculator

    Calculate your UK take-home pay after Income Tax and National Insurance for 2025/26.

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    Age Calculator

    Calculate your exact age in years, months, days, weeks, hours, and minutes.

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    Percentage Calculator

    Calculate percentages instantly. X% of Y, percentage change, add/subtract %.

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    Discount Calculator

    Calculate sale prices and savings. Stack multiple discounts. Multi-currency support.

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    Tip Calculator

    Calculate tips and split bills easily. Preset percentages for restaurants and services.

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    ROI Calculator

    Calculate Return on Investment and annualised CAGR. Compare investment performance.

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    Expense Split Calculator

    Split bills and expenses fairly between friends. Minimum transfers algorithm.

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    Zakat Calculator

    Calculate your annual Zakat obligation: 2.5% on qualifying wealth above Nisab.

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    Unit Price Calculator

    Compare unit prices to find the best deal. Add products and see cost per unit.

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    Break-Even Calculator

    Calculate your break-even point in units and revenue. Fixed & variable cost analysis.

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    Markup Calculator

    Calculate markup percentage, profit margin, and selling price. Convert between markup and margin.

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    Salary Calculator

    Convert salary between hourly, daily, weekly, biweekly, monthly, and annual. Multi-currency.

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    Commission Calculator

    Calculate flat or tiered sales commission. Add base salary and see effective rates.

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    Rent Affordability Calculator

    Find out how much rent you can afford at 30%, 40%, and 50% of your income.

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    Freelance Rate Calculator

    Calculate your ideal freelance hourly and day rate from target income, expenses, and tax.

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    Timesheet Calculator

    Calculate weekly work hours and pay from start/end times. Supports overtime and breaks.

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    Grocery Budget Calculator

    Plan your monthly grocery budget by household size with eating-out adjustments.

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    Travel Budget Calculator

    Plan your trip budget with accommodation, flights, food, activities, and transport breakdowns.

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    Date Difference Calculator

    Calculate the exact difference between two dates in years, months, weeks, days, and hours.

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    Countdown Calculator

    Calculate exactly how many days, weeks, and months until any date. Events, holidays, deadlines.

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    Business Days Calculator

    Count working days between dates or add business days. Excludes weekends automatically.

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    Background Remover

    Remove image backgrounds instantly with AI. 100% free, unlimited, private.

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    Image Upscaler

    Upscale images up to 4x with AI. Enhance resolution for print, social, or HD output.

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    Image Compressor

    Compress images online. Reduce file sizes while maintaining quality. Batch processing.

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    Image Resizer

    Resize images for social media. Presets for Instagram, Facebook, Twitter & more.

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    Color Palette Generator

    Generate beautiful color palettes. Extract from images or create with color theory.

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    Text Remover

    Remove text from images you own or can edit, with AI inpainting that fills the area realistically.

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    Watermark Remover

    Remove watermarks and logos from images you own or can edit, with AI inpainting.

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    Merge PDF

    Combine multiple PDF files into one document. Drag, drop, reorder, and merge.

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    Split PDF

    Extract pages from PDF files. Split into individual pages or custom ranges.

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    Rotate PDF

    Rotate PDF pages 90°, 180°, or 270°. Fix page orientation easily.

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    PDF to JPG

    Convert PDF pages to high-quality JPG images. Adjustable quality and resolution.

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    JPG to PDF

    Convert images to PDF. Combine multiple JPG or PNG files into one document.

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    Compress PDF

    Reduce PDF file size without losing quality. Three compression presets available.

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    PDF to Word

    Convert PDF to editable Word documents. Extract text with formatting preserved.

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    Sign PDF

    Add your signature to any PDF. Draw, type, or upload your signature.

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    Protect PDF

    How to password-protect a PDF for free, step by step, plus the security basics.

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    Organize PDF

    Reorder, delete, and add pages. Visual drag-and-drop page management.

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    Word Counter

    Count words, characters, sentences. Reading time, speaking time, and word frequency.

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    SEO-Friendly URL Generator

    Turn blog titles into clean URLs. Bulk generate, copy or download as CSV.

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    Lorem Ipsum Generator

    Generate placeholder text for your designs. Paragraphs, sentences, or word count.

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    Case Converter

    Convert text between UPPERCASE, lowercase, Title Case, camelCase, snake_case and more.

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    Text Diff Checker

    Compare two texts and see additions, deletions, and unchanged lines highlighted.

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    JSON Formatter & Validator

    Format, validate, and minify JSON instantly. Pretty-print with 2 or 4 space indent.

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    QR Code Generator

    Generate QR codes for any URL or text. Customise colours and download as PNG.

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    Password Generator

    Generate cryptographically secure passwords. Customisable length and character types.

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    UUID Generator

    Generate random UUID v4 identifiers instantly. Cryptographically secure and browser-based.

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    Hash Generator

    Generate SHA-256, SHA-384, SHA-512, and SHA-1 hashes from any text. Runs in your browser.

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    Quote Generator

    Create professional trade quotes in seconds. Add line items, VAT, and download as PDF.

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    Invoice Generator

    Create professional invoices with line items, tax, and download as PDF. Free and private.

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    Meta Tag Generator

    Generate SEO meta tags, Open Graph, and Twitter Card tags. Copy-paste ready HTML.

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    Markdown to HTML

    Convert Markdown to clean HTML instantly. Live preview, headers, bold, links, code blocks.

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    Regex Tester

    Test and debug regular expressions in real time. See matches highlighted instantly.

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    Readability Score Checker

    Analyse text with Flesch, Gunning Fog, and SMOG scores. Writing insights included.

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    Duplicate Line Remover

    Remove duplicate lines from text. Preserves order, case-sensitive toggle, blank line removal.

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    Whitespace Remover

    Clean up text by removing extra spaces, blank lines, tabs, and trailing whitespace.

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    Base64 Encoder & Decoder

    Encode text to Base64 or decode Base64 back to text. Supports UTF-8 and Unicode.

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    URL Encoder & Decoder

    Encode or decode URLs and query parameters. Supports encodeURI and encodeURIComponent.

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    Color Converter

    Convert colours between HEX, RGB, and HSL formats. Native colour picker included.

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    Google SERP Preview

    Preview how your page appears in Google search results. Optimise titles and descriptions.

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    Privacy Policy Generator

    Generate a free, GDPR-compliant privacy policy for your website in seconds.

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    Time Zone Converter

    Convert times between 25+ world time zones. Handles daylight saving automatically.

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    Unix Timestamp Converter

    Convert between Unix timestamps and human-readable dates. Seconds and milliseconds.

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    Work Hours Calculator

    Calculate weekly work hours, overtime, and pay. Enter start/end times and breaks.

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    Ovulation Calculator

    Estimate your ovulation date and fertile window based on your menstrual cycle.

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    Heart Rate Zone Calculator

    Calculate your 5 training zones using Karvonen or percentage method. Fat burn to VO2 max.

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    Robots.txt Generator

    Generate a robots.txt file for your website. Control search engine crawling visually.

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    Terms & Conditions Generator

    Generate free T&C for your website or app. Ecommerce, accounts, and refund clauses.

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    Schema Markup Generator

    Generate JSON-LD structured data for Google rich results. Business, Article, FAQ, Product.

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    Keyword Density Checker

    Analyse keyword density, word frequency, and check target keyword SEO optimisation.

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    Favicon Generator

    Generate favicons in all standard sizes (16×16 to 512×512) from any image. Download as ZIP.

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    Image to PNG

    Convert any image (JPG, WebP, BMP, GIF) to PNG format. Preserves transparency.

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    Image to WebP

    Convert images to WebP, Google's modern format. Adjustable quality for smaller files.

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    Text Reverser

    Reverse text by characters, words, or lines. Instant results, multiple modes.

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    Binary ↔ Text Converter

    Convert text to binary and binary to text. ASCII encoding with space-separated bytes.

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    Image Cropper

    Crop images online. Drag to select the area you want, then download the result.

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    Image Metadata Viewer

    View image metadata: file size, dimensions, aspect ratio, and more. No upload to any server.

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    Morse Code Translator

    Translate text to Morse code and Morse code to text. Letters, numbers, and punctuation.

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    ROT13 Encoder / Decoder

    Encode or decode text using the ROT13 cipher. Apply it twice to get the original back.

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    HTML to Text

    Strip HTML tags and extract plain text. Removes scripts, styles, and all markup.

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    Pomodoro Timer

    Stay focused with the Pomodoro technique. Timed work intervals with breaks. Tracks sessions.

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    Emoji Picker & Copy

    Browse 500+ emojis by category. Click any emoji to copy it to your clipboard instantly.

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    Currency Converter

    Convert between 35+ world currencies using static reference exchange rates. No live FX feed.

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    Stopwatch

    Precise online stopwatch with lap times. Start, stop, and record splits in your browser.

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    VO2 Max Calculator

    Estimate your VO2 max with the Cooper run test or Rockport walk test. Assess cardiovascular fitness.

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    Waist-to-Hip Ratio Calculator

    Calculate your WHR and assess cardiovascular health risk based on WHO guidelines.

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    Net Worth Calculator

    Calculate your net worth: total assets minus total liabilities. Clear financial snapshot.

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    Inflation Calculator

    See how inflation affects your money over time. Future cost and purchasing power projections.

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    UK Tax Bracket Calculator

    See your Income Tax per band for 2025/26. Includes Personal Allowance taper for high earners.

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    Sitemap XML Generator

    Generate a sitemap.xml for your website. Add URLs, set priority and frequency, then download.

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    Aspect Ratio Calculator

    Calculate the aspect ratio of any width and height. Find equivalent dimensions for resizing.

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    CSS Gradient Generator

    Generate beautiful CSS gradients visually. Pick colours, adjust angle, and copy CSS code.

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    CSS Box Shadow Generator

    Generate CSS box-shadow visually. Adjust offset, blur, spread, colour, and copy the code.

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    Number Base Converter

    Convert numbers between decimal, binary, octal, and hexadecimal instantly as you type.

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    Roman Numeral Converter

    Convert between Roman numerals and decimal numbers. Supports values from 1 to 3,999.

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    Electricity Cost Calculator

    Calculate the running cost of any appliance. Enter wattage, usage hours, and electricity rate.

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    Fuel Cost Calculator

    Calculate how much fuel your journey will cost. Enter distance, MPG, and fuel price.

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    Placeholder Image Generator

    Generate custom placeholder images for wireframes and mockups. Set size, colours, and text.

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    JSON to CSV Converter

    Convert JSON arrays to CSV format. Download as .csv or copy to clipboard.

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    CSV to JSON Converter

    Convert CSV data to JSON format. First row is used as keys.

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    Body Surface Area Calculator

    Calculate your BSA using Du Bois, Mosteller, or Haycock formulas. Used in medical dosing.

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    Random Number Generator

    Generate cryptographically secure random numbers. Set range, count, and uniqueness.

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    Screen Size & Resolution Checker

    Check your screen resolution, viewport size, device pixel ratio, and display info.

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    CSS Border Radius Generator

    Generate CSS border-radius visually. Adjust each corner independently or link them together.

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    Text Repeater

    Repeat any text multiple times with optional separators. Great for testing and filler text.

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    Temperature Converter

    Convert between Celsius, Fahrenheit, and Kelvin instantly. Accurate temperature conversion.

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    Length & Distance Converter

    Convert between mm, cm, m, km, inches, feet, yards, and miles. Instant unit conversion.

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    Weight & Mass Converter

    Convert between mg, g, kg, tonnes, ounces, pounds, and stone instantly.

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    Speed Distance Time Calculator

    Calculate speed, distance, or time using the SDT formula. Supports km/h and mph.

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    Cups to Grams Converter

    Convert cups to grams and grams to cups for 200+ cooking and baking ingredients.

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    Air Fryer Converter

    Convert oven recipes to air fryer settings. 100-food database with frozen food mode.

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    Meat Temperature Chart

    Complete internal temperature guide with USDA minimums and doneness levels for 75+ cuts.

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    Cooking Measurement Converter

    Convert cups, tablespoons, teaspoons, ml, litres, fluid ounces, pints, quarts & gallons across US, metric & Imperial.

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    Recipe Scaler

    Scale any recipe up or down by servings. Smart fractions, example recipes, and copy-to-clipboard.

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    Oven Temperature Converter

    Convert °F, °C, Gas Mark & Fan oven temperatures. Full baking temperature chart included.

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    Baking Substitution Finder

    Find reliable substitutes for 25+ baking ingredients. Vegan, gluten-free, and dairy-free options with quality ratings.

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    Pizza Dough Calculator

    Calculate exact dough ingredients for Neapolitan, New York, Detroit, Sicilian, thin & crispy, and sourdough pizza.

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    Sourdough Calculator

    Calculate sourdough ingredients with adjustable hydration and starter percentage. Country loaf, focaccia, sandwich bread, and more.

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    Turkey Cooking Time Calculator

    Calculate turkey cooking time by weight and method. 6 methods: roast, spatchcock, deep-fried, smoked, slow cooker.

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    Prayer Time Calculator

    Accurate salah times for any location. 10 calculation methods with Hanafi and Shafi'i Asr options.

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    Qibla Direction Finder

    Find the exact direction of the Kaaba from any location on Earth using GPS or manual coordinates.

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    Tasbih Counter

    Digital dhikr counter with presets for SubhanAllah, Alhamdulillah, and Allahu Akbar. Automatic saving.

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    Hijri Date Converter

    Convert between Gregorian and Islamic (Hijri) calendar dates. Instant, accurate conversion.

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    Ramadan Timetable

    Full month Suhoor and Iftar timetable with fasting hours for your location. Any year.

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    Islamic Baby Names

    Search Muslim baby names with meanings, Arabic script, and origins. Boys, girls, and unisex names.

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    Islamic Inheritance Calculator

    Calculate Faraid shares according to the Quran. Supports Hanafi and Shafi'i schools with Awl and Radd.

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    99 Names of Allah

    Explore the Asma ul Husna: 99 beautiful names of Allah with Arabic text, meanings, Quran references, and categories.

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    Dua Collection

    Authentic duas from the Quran and Sunnah with Arabic, transliteration, translation, and source references.

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    Halal Ingredient Checker

    Check if food additives and E-numbers are halal, haram, or mashbooh. 70+ ingredients with sources.

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    Islamic Calendar

    Interactive Hijri calendar with monthly view, Gregorian equivalents, and key Islamic dates highlighted.

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    Dhikr After Prayer

    Step-by-step post-salah adhkar guide with interactive counter. Arabic, transliteration, and hadith sources.

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    Wudu Guide

    Step-by-step guide to Islamic ablution (wudu). Fard and Sunnah steps, madhab differences, and interactive tracker.

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    Hajj & Umrah Checklist

    Interactive packing checklist for Hajj and Umrah pilgrimage. 60+ items, 7 categories, with progress tracking.

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    Islamic Months Guide

    Complete guide to all 12 Hijri months. Sacred months, key dates, fasting guidance, and significance explained.

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    Sadaqah Jariyah Tracker

    Track your ongoing charity (Sadaqah Jariyah). Log donations to wells, orphans, mosques, and education with categories and totals.

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    Stamp Duty Calculator

    Calculate stamp duty (SDLT, LBTT, LTT) for England, Scotland, and Wales. First-time buyer relief and additional property surcharges.

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    Income Tax Calculator

    Calculate UK income tax, National Insurance, and take-home pay for 2026/27. England/Wales/NI and Scottish rates with 60% trap warning.

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    National Insurance Calculator

    Calculate employee, self-employed, and employer NI contributions for 2026/27. Class 1, 2, and 4 rates with full breakdown.

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    Council Tax Calculator

    Calculate your UK council tax bill by band, region, and discounts. England, Scotland, and Wales bands with single person and disabled reductions.

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    Pension Calculator

    Estimate your UK pension pot at retirement. Workplace pension growth with employer contributions, tax relief, and compound interest projections.

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    Dividend Tax Calculator

    Calculate UK dividend tax for 2026/27. Basic, higher, and additional rates after the £500 allowance. Salary vs dividend comparison.

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    Capital Gains Tax Calculator

    Calculate UK CGT for 2026/27 on shares, property, crypto, and other assets. Includes £3,000 annual exempt amount and loss offsetting.

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    ISA Allowance Calculator

    Track your UK ISA allowance across Cash, Stocks & Shares, Lifetime, and IFISA. Project long-term tax-free growth with compound interest.

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    AVIF Converter

    Convert AVIF images to PNG, JPG, or WebP. Modern format support with instant preview.

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    HEIC to JPG Converter

    Convert iPhone HEIC photos to JPG. Batch conversion in your browser, nothing uploaded.

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    GIF Maker

    Create GIFs from images or short clips. Adjust frame rate, size, and loop settings.

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    Image to Text (OCR)

    Extract text from images with OCR. Supports photos, screenshots, and scanned documents.

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    Metadata Remover

    Strip EXIF data from photos. Remove location, device, and timestamp metadata for privacy.

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    PDF Page Numbers

    Add page numbers to PDF files. Choose position, font size, and starting number.

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    PDF Watermark

    Add text or image watermarks to PDF pages. Control opacity, rotation, and placement.

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    Unlock PDF

    Remove password protection from PDFs you own. Restore full edit, print, and copy access.

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    Scientific Calculator

    Full scientific calculator with trigonometry, logarithms, powers, and memory. Runs entirely in your browser.

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    Savings Goal Calculator

    Plan your savings goals. Calculate monthly contributions needed to reach any target amount.

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    Typing Speed Test

    Test your typing speed and accuracy. Track WPM, errors, and improvement over time.

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    JWT Decoder

    Decode JSON Web Tokens. Inspect the header, payload, and signature of any JWT.

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    SQL Formatter

    Format SQL queries for readability. Standardise keywords, indentation, and line breaks.

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    XML Formatter

    Format XML for readability. Pretty-print, validate, and minify XML documents.

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    HTML Beautifier

    Format HTML for readability. Indent tags, break lines, and structure markup cleanly.

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    HTML Minifier

    Minify HTML to reduce page weight. Strip whitespace, comments, and optional attributes.

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    JS Beautifier

    Format JavaScript for readability. Indent, space, and structure code cleanly.

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    JS Minifier

    Minify JavaScript to shrink bundle size. Remove whitespace, comments, and safe renames.

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    CSS Beautifier

    Format minified CSS into readable code. Configurable indentation and line breaks.

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    CSS Minifier

    Minify CSS to reduce file size. Remove whitespace, comments, and optimise for production.

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    Cron Expression Generator

    Build cron expressions with a visual editor. Human-readable schedule descriptions included.

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    Chmod Calculator

    Calculate Unix file permissions. Convert between numeric (755) and symbolic (rwx) notation.

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    HTTP Status Code Lookup

    Look up HTTP status codes. Full descriptions for 1xx, 2xx, 3xx, 4xx, and 5xx responses.

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    User Agent Parser

    Parse user agent strings. Identify browser, OS, device, and rendering engine instantly.

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    PX to REM Converter

    Convert px to rem for responsive CSS. Custom base font size with bidirectional conversion.

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    All processing happens in your browser • Free to use • Privacy-conscious by default