About the Scientific Calculator
A full-featured scientific calculator that works with your mouse, touchscreen or keyboard. It supports trigonometry in degrees or radians, logarithms, powers, roots, factorials, π and e, and keeps a history of your recent calculations.
How to use it
- Type or tap an expression — the result updates live.
- Press = (or Enter) to save it to history.
- Toggle DEG/RAD for trigonometric functions.
- Use Ans to reuse the previous result.
Formula & method
Order of operations: ( ) → ! % → ^ → unary − → × ÷ → + −Frequently asked questions
Can I use my keyboard?
Yes. Type numbers and operators directly, use ^ for powers, press Enter for equals, Backspace to delete and Escape to clear.
Why does sin(30) not equal 0.5?
Check the angle mode. sin(30) = 0.5 in degrees (DEG). In radians (RAD) use sin(π/6).
Results are estimates for general information only and are not financial, tax, legal or medical advice. Please confirm important decisions with a qualified professional.