MATH & NUMBERS
Scientific Calculator
A full scientific calculator with trig, logs, powers and more.
100% free
No sign-up
Private — runs in your browser
Instant results
KEY TAKEAWAYS
- A full scientific calculator with trig, logs, powers and more.
- Free to use — no sign-up, no account and no usage limits.
- Runs entirely in your browser, so the numbers you enter stay private.
- Works on desktop and mobile with instant, accurate results.
Last updated: June 2026
About the Scientific Calculator
Type or tap an expression with parentheses, powers, roots, trigonometry (degrees or radians), logarithms, factorials and constants — it evaluates as you go.
Frequently asked questions
Degrees or radians?
Toggle DEG/RAD at the top; trig functions respect whichever mode is active.
Free online tool from ConvertFleet. Calculations run entirely in your browser — nothing you type is sent anywhere. Results are estimates for general guidance only.