Local · Private · Free
Scientific Calculator
Trig, logs, powers, roots, factorials and memory — type with the keyboard or tap the pad, with a reusable history, all on your device.
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🔒 Calculated locally — nothing is sent anywhere. Type with your keyboard: digits & + − * / ^ ( ) !, Enter to evaluate, Backspace to delete, Esc to clear.
History
Your calculations will appear here.
Click any entry to reuse it.
Click any entry to reuse it.
A real parser — not eval()
Every expression is tokenised and evaluated by a small recursive-descent parser written from scratch, so it honours operator precedence, parentheses and function calls without ever running arbitrary code. Trig respects your DEG/RAD choice, factorials use the exact gamma-free integer product, and it all happens in your browser — fast, private and free forever.