Scientific Calculator
About Scientific Calculator
Our free online Scientific Calculator supports everything from basic arithmetic to trigonometric functions (sin, cos, tan and their inverses), logarithms, square/cube roots, powers, factorials, and constants like π and e. Switch between degree and radian mode for angle calculations, use memory (M+, M-, MR, MC) to store running totals, and review your past calculations in the built-in history panel.
History
Everything runs directly in your browser using a proper expression parser - no external calculator app, download or sign-up required.
How to Use the Scientific Calculator
- Type or click in your expression using the number pad and function buttons for operations like sin, log or powers.
- Switch between degree and radian mode before running any trigonometric calculation, since the same input gives a different result in each mode.
- Use the M+ and M- buttons to add or subtract a result from memory, then press MR to recall it in a later calculation.
- Press MC to clear memory once you no longer need the stored value.
- Check the history panel to review or reuse a previous calculation instead of retyping it.
- Use the constants π and e directly in expressions rather than typing their decimal approximations.
Students working through trigonometry or algebra homework use it in place of a physical calculator, while engineers and analysts use it for quick one-off calculations involving logarithms, exponents or roots that a basic calculator can't handle.
Frequently asked questions
Does this calculator respect order of operations?
Yes - it uses a proper expression parser that follows standard mathematical order of operations (parentheses, exponents, multiplication/division, then addition/subtraction), not a naive left-to-right evaluation.
Can I switch between degrees and radians for trig functions?
Yes - use the DEG/RAD toggle before entering sin/cos/tan calculations to get the mode you need.
Does it have memory functions?
Yes - M+, M-, MR, and MC work the same way as a physical scientific calculator, and there's a calculation history panel so you can review previous results.
