Scientific Calculator
Free online scientific calculator with trigonometry, logarithms, powers, factorial, and more. Degree/radian toggle, memory functions. No sign-up.
How to Use
1
Enter expression
Type or click buttons to build your mathematical expression.
2
Use functions
Access sin, cos, tan, log, ln, sqrt, factorial, and more from the button grid.
3
Get result
Press = or Enter to evaluate. Result displays instantly with full precision.
Features
Full Scientific Functions
Sin, cos, tan, log, ln, sqrt, powers, factorial, pi, and Euler's number.
Degree/Radian Toggle
Switch between degree and radian mode for trigonometric calculations.
Calculation History
Your recent calculations are saved for the session so you can reference them.
Keyboard Support
Type expressions directly with your keyboard. Press Enter to evaluate.
Frequently Asked Questions
Calculator guides
Recommended Reading
Practical guides matched to this calculator, its inputs, and the result users need to trust.
4 guides