Scientific Calculator
A free scientific calculator with trigonometry, logarithms, exponents, factorials, history and memory.
Expressions are evaluated in your browser and never sent to a server.
Result
4.5
sin(30)+sqrt(16)
Supported syntax
sin(30), sqrt(9), log(100), 2^8, 5!, 15%, pi, e, Ans, M are supported.
History
Results you calculate appear here.
Examples
What is this tool?
A full scientific calculator that runs in your browser. It supports functions like sin, cos, tan, log, ln, sqrt, exponents, factorials and percentages, with DEG/RAD modes, an Ans variable, memory keys and a calculation history.
How to use
- Type an expression or use the on-screen keypad.
- Press Calculate (or Enter) to evaluate and add it to the history.
- Use Ans and M to chain calculations, and DEG/RAD to switch angle units.
Use cases
- Quick engineering or homework calculations.
- Percentages and powers without opening a spreadsheet.
- Chaining results with Ans and memory keys.
Notes
- Factorials support integers up to 170.
- All calculations happen locally in your browser.
FAQ
How do I switch between degrees and radians?
Use the DEG / RAD toggle above the input. Trigonometric functions respect the selected angle mode.
What do Ans and M do?
Ans holds the result of your last calculation, and M is a separate memory slot with M+, M−, MR and MC buttons — like a physical calculator.
Is my input sent to a server?
No. Expressions are evaluated locally in your browser.
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