Scientific calculator
Type an expression or tap the keys. The answer previews as you type and appears on =. Switch between degrees and radians, store values in memory, and reuse past results.
- Trig, logs, memory
- Free, no sign-up
Runs in your browser. Nothing you type or open is uploaded. Free to use, no account. More everyday tools
How to use it
- Type an expression such as 2sin(30) + √16, or use the keys.
- Choose degrees or radians for trigonometry.
- Press = for the result; tap a line in the history to reuse it.
What it can do
The calculator follows the usual order of operations, with powers before multiplication and implied multiplication such as 2π or 3(4 + 5). It has trigonometric and inverse functions, hyperbolic functions, natural and base-10 logs, powers and roots, factorials, permutations and combinations, percentages, π, e, a random number and the previous answer as Ans.
Results show up to 12 significant digits, with scientific notation for very large or small numbers, and values like sin(180°) show as exactly 0. Memory and the last 30 calculations are kept in this browser.
Private by design
Privacy
Everything runs in this page and stays on your device. Calculations and history are kept in this browser.
This page also shows Google ads, which can use cookies. Privacy and cookies explains how.
Questions
How do I switch between degrees and radians?
Press DEG or RAD. The current mode is shown on the display and applies to sin, cos, tan and their inverses.
Can I type with the keyboard?
Yes. Type numbers, operators, brackets and function names, then press Enter for the result.
What does Ans do?
Ans holds the last result, so you can continue a calculation, for example Ans × 2.
Why is -2^2 equal to -4?
Powers come before the minus sign, as on most scientific calculators. Write (-2)^2 to get 4.
From the same developer
- Units Converter & Calculator: the matching app.
