Tools / Scientific calculator online
Scientific calculator online
Type a calculation like (3+4)*2^3 or 15% of 80, or use the keys. Angles in degrees or radians. The history keeps your last results.
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🔒 Runs entirely in your browser – nothing you enter is uploaded or stored.
How to use it
- Type the expression or click the keys.
- Choose degrees or radians for trigonometric functions.
- Press = or Enter – earlier results appear in the history.
Your inputs live only in the link, not on our server.
Last checked: October 2026. Found a mistake? Use the form below – we fix confirmed errors and update the date.
Frequently asked questions
How do I calculate percent?
Type 80*15% for 15 % of 80 (= 12) or 80+15% to add 15 % (= 92).
How do I enter a square root?
Use sqrt(16) or the √ key; for other roots use powers, e.g. 27^(1/3) = 3.
Degrees or radians?
For everyday tasks (roofs, slopes) use degrees; maths and physics often use radians.