Scientific Calculator
Advanced calculator with trigonometry, logarithms, exponents, constants, and calculation history.
History
About the Scientific Calculator
What is a Scientific Calculator?
A scientific calculator is an electronic device or software application designed to perform complex mathematical operations beyond basic arithmetic. It supports trigonometric functions, logarithms, exponents, factorials, and statistical calculations.
How to Use
Click the calculator buttons to build your expression, then press = to evaluate. Use DEG/RAD toggle to switch between degrees and radians for trigonometric functions. The history tape shows your last 10 calculations.
What functions are supported?
This calculator supports sin, cos, tan, natural log (ln), base-10 log, square root, powers, pi, Euler's number, parentheses, percentage, and sign toggle.
Is this calculator free to use?
Yes, BestCalc's scientific calculator is completely free and runs entirely in your browser. No data is sent to any server.
How does the history feature work?
Your last 10 calculations are stored during your session. Click any previous answer to reuse it in a new calculation.
Can I use keyboard input?
Currently, the calculator is optimized for on-screen button input to ensure accuracy across all devices.