Calculator
A calculator for everyday arithmetic, with an optional scientific mode for trig, logs and powers.
Your file never leaves this browser tab — everything runs locally on your device.
How to use calculator
- Click the number and operator buttons, or use your keyboard, to build up a calculation.
- Switch to "Scientific" mode for trigonometric, logarithmic, power and reciprocal functions — "Basic" mode is selected by default.
- Press "=" to see the result, "C" to clear, or "⌫" to remove the last digit.
Common use cases
- Quick everyday sums without opening a separate calculator app.
- Working out totals, splits or change while shopping or budgeting.
- Trigonometry, logarithm and exponent calculations for schoolwork or quick engineering checks.
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