Scientific Calculator
A full scientific calculator with trig, log, power, degree/radian and memory functions.
Calculated locally in your browser.
- A one-click DEG/RAD toggle — most everyday trig (homework, geometry) is in degrees, no manual π/180 conversion needed.
- Full memory register (MC/MR/MS/M+/M-) for multi-step calculations — store an intermediate result and keep computing.
- Trig, logs, powers, roots, π and e on one keypad — more than the basic calculator.
- Expressions are parsed by a small purpose-built engine, not `eval()`, so it only ever does maths.
- Runs in your browser, works offline once loaded, no ads over the keypad.
Why this is private
- Calculated locally in your browser.
- Open your browser's DevTools → Network tab while using this tool — you won't see a request carrying your input, because it never leaves your device.
- Nothing you enter is uploaded to a server or shared with us — the processing happens entirely on your device.
Overview
A scientific calculator supporting standard arithmetic, trigonometric functions (sin, cos, tan and their inverses) in either degrees or radians, logarithms (log base 10 and natural ln), powers, square roots, memory functions (MC/MR/MS/M+/M-), and the constants π and e.
How to use it
- 1Pick DEG or RAD for trig functions.
- 2Build an expression with the buttons — functions like sin( and log( insert an open bracket for you.
- 3Press = to evaluate.
- 4Use MS/M+/M-/MR/MC to store, add to, subtract from, recall, or clear the memory register.
- 5Press AC to clear, or copy the result.
Frequently asked questions
What people use it for
Work through a physics or maths problemEvaluate an expression with exponents, roots and parentheses in one go.
Do trigonometry homework in degreesSwitch to DEG mode and compute sine, cosine and tangent directly, no conversion needed.
Run a multi-step calculationStore an intermediate result with MS, keep calculating, then recall it with MR instead of writing it down separately.
Check a spreadsheet formulaVerify a calculation before trusting a cell.
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Scientific Calculator