Free Online Apps

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

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 with AI. Paint over text and let AI fill it realistically.

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Watermark Remover

Remove logo and symbol watermarks from images with AI. Paint and erase.

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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

Add password protection to PDF files. Control print, copy, and edit permissions.

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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