Home › calculator › Scientific Calculator
Scientific Calculator
Scientific Calculator evaluates a typed formula directly: numbers, the four operators, powers with ^, parentheses, and the functions sin, cos, tan, log (base 10), ln, sqrt plus the constants pi and e. Every character is validated against a whitelist before evaluation, so an unsupported symbol produces a clear error rather than a wrong answer.
How to use Scientific Calculator
- Type the formula, for example sqrt(2)*sin(pi/4) + 5^2.
- Press evaluate to compute it.
- Copy the result, which is shown to ten decimal places and trimmed of trailing zeros.
Where Scientific Calculator is useful
- Working out compound expressions with brackets quickly.
- Checking a trigonometry or logarithm result before using it in code.
- Doing a calculation without a physical calculator to hand.
- Verifying the order of operations in a formula you are about to write.
Formats, algorithms and limits
Trigonometric functions work in radians, matching how programming languages and spreadsheets expect them; multiply by pi/180 yourself for degrees. The caret means exponentiation, log is base 10 and ln is the natural logarithm. Implicit multiplication is not accepted, so write 2*pi rather than 2pi.
Troubleshooting and honest limits
- Close every bracket before evaluating — the validator reports unbalanced parentheses clearly.
- Use sqrt(2) instead of 2^0.5 when you want the formula to read like the maths it represents.
- Very large or small results are shown in plain decimal rather than scientific notation, so use the number of digits as your warning sign.
Frequently asked questions
Does it support degrees instead of radians?
It computes in radians only. Convert a degree value with the formula itself, for example sin(30*pi/180).
Why was my formula rejected outright?
The tool runs a whitelist: only digits, the declared operators and the listed functions and constants are allowed. Anything else is reported as an invalid character instead of being executed.
Can I use variables or memory keys?
No. Each evaluation is a single self-contained expression; for step-by-step work you can paste the previous result into the next formula.
How precise is the result?
It uses your browser's double-precision arithmetic and displays up to ten decimal places, which is the same precision as most desktop calculators.
Related tools
Page written and reviewed by the FreeConvertio engineering team on 2026-10-14. Scientific Calculator runs entirely in your browser — no uploads, no account and no daily limits.