What functions are supported?

Trigonometric (sin, cos, tan and their inverses), logarithms (log base 10, natural log), square root, power, factorial, absolute value, and the constants π and e.

How do I switch between degrees and radians?

Use the DEG/RAD toggle button. When in degree mode, sin(90) = 1. In radian mode, sin(π/2) = 1. The current mode is shown on the display.

Can I type an expression directly?

Yes — click the expression field and type a formula directly, or use the buttons to build the expression. Press = or Enter to evaluate.

Is there a calculation history?

Yes — the last 10 calculations are shown in the history panel below the calculator. Click any history entry to restore that expression.

Scientific Calculator

Full scientific calculator with trigonometric functions, logarithms, exponents, factorials, and calculation history.

Your files never leave your device

How to Scientific Calculator

Click the buttons to build an expression, or type directly into the expression field.
Toggle DEG/RAD to switch between degree and radian modes for trigonometric functions.
Press = or Enter to evaluate the expression.
Click any item in the history panel to restore that expression.

Why Use This Tool?

A scientific calculator in your browser is always available when you need it — no app to install, no account required. Supports all standard scientific operations including trigonometry (sin, cos, tan and inverses), logarithms (log, ln), square roots, powers, and factorials, with calculation history.

Scientific Calculator

How to Scientific Calculator

Why Use This Tool?

Frequently Asked Questions