Does this calculator work offline?

Yes. After the first load, everything runs in your browser.

Are my calculations tracked?

No. We don’t send your input anywhere — it stays on your device.

A number followed by % is a percentage of 1. For example, 12% becomes 12/100, so 12% * 200 = 24.

Basic arithmetic with parentheses: + − × ÷ (also * and /), decimals, and %.

That’s normal with floating-point math in browsers. You may see tiny rounding artifacts (e.g., 0.30000000000000004).

Yes. It works in any modern mobile or desktop browser.

Not in this tool — it keeps things simple. For advanced math, use a scientific calculator.

Normal

Keyboard: 0–9 + − × ÷ · Enter calculate · Esc clear · Backspace delete