Can I type expressions directly with my keyboard?

Yes! Keyboard input supports digits, decimal points, arithmetic operators, parentheses, Enter (=), Backspace, and Escape (AC).

Math & Statistics100% Client-Side · Instant Math

Scientific Calculator

Full-featured scientific calculator with Deg/Rad, trig, logs, powers, and history.

Angle Unit

Ans: 016.5

Calculation Tape

Type expression e.g. sin(30) + log(100) * 2^3

How to Use This Calculator

Evaluate mathematical expressions accurately with keyboard support, Degrees/Radians toggle, trigonometric functions, logarithms, factorials, powers, and clickable calculation history.

1Click buttons or type directly using your keyboard (numbers, +, -, *, /, ^, parentheses).
2Toggle DEG (Degrees) or RAD (Radians) before running sin, cos, tan, asin, acos, or atan.
3Press = or Enter to compute and save results into the reusable history tape.

Standard Formula & Methodology

Custom recursive shunting-yard parser with safe IEEE-754 floating-point precision rounding (zero eval).

Helpful Context & Precision Notes

Supports constants π and e, Ans memory recall, and direct copy of numeric output.

All inputs stay locally inside your browser tab — nothing is uploaded or logged.

Frequently Asked Questions

Click the DEG / RAD toggle badge above the keypad at any time before pressing =. The active mode applies to all direct and inverse trigonometric functions.