A full scientific calculator, right in your browser — trigonometry, logarithms, square roots, powers, and parentheses, with both button and keyboard input. Built on a purpose-written expression parser (not a generic eval), so only a fixed, safe set of math operations is ever possible.
How to use the scientific calculator tool
- 1
Type or click an expression
Use the on-screen buttons or your keyboard for digits and basic operators.
- 2
Use functions and constants
Tap sin, cos, tan, √, log, ln, π, or e to insert them into your expression.
- 3
Press = or Enter
See the result — a live preview also shows as you build the expression.
Common use cases
Solve a trigonometry problem
Calculate sin, cos, or tan in either degrees or radians.
Work out a quick log or exponent
Calculate logarithms, natural logs, square roots, and powers.
Do multi-step math with parentheses
Build a full expression with correct order of operations.
Frequently asked questions
Yes — toggle between Deg and Rad above the display; it affects sin, cos, tan, and their inverse functions.