Scientific Calculator
Free online scientific calculator with trigonometric, logarithmic, and exponential functions. Keyboard support, DEG/RAD modes, and expression history.
No signup. 100% private. Processed in your browser.
A full-featured scientific calculator that runs entirely in your browser — with trig functions, logs, powers, factorial, and keyboard shortcuts.
No signup. No ads. Your calculations stay private.
DEG
0
Keyboard: numbers, operators, Enter = calculate, Esc = clear, s/c/t/l/q = sin/cos/tan/log/√
How to use this tool
1
Enter a mathematical expression using the buttons or your keyboard.
2
Use scientific functions like sin, cos, log, sqrt, and constants like π and e.
3
Press = or Enter to calculate. Use Ans to chain results into new calculations.
Common uses
- Trigonometric calculations for maths and physics
- Logarithmic and exponential computations
- Quick percentage and factorial calculations
- Engineering and scientific formula evaluation
- Student homework and exam preparation
- Converting between degrees and radians
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