Standard Calculator

Keyboard: 0–9, + − × ÷, ., Enter (=), Esc (clear), Backspace.

How to Use

  1. Type numbers on your keyboard or click the buttons.
  2. Use CE to clear the current entry; C resets everything.
  3. 1/x, x², and √x act on the number currently shown.
  4. % treats a number as a percent of the value on its left.

Worked Examples

  • Discount: 200 − 15 % → 170
  • Tip: 84.50 × 15 % → 12.675
  • Square root: √(196) → 14

FAQ

Why does my phone show different results?

Percent handling varies across calculators. This one uses “percent of the left value” and standard operator precedence.

Is it OK for finance?

Great for arithmetic, but it doesn’t include fees or taxes. Use the dedicated finance tools on this site for loans or investing.

Educational use only.