How to use the online calculator
- Click the keys or just type: numbers, + − × ÷, brackets, ^ for powers and % for percent. The answer previews as you type.
- Press = or Enter for the result. Keep typing an operator to carry on from it, or a number to start fresh.
- Switch to Scientific for sin, cos, tan, logs, roots and factorials. Copy puts the result on your clipboard, and clicking a line in History uses it again.
Keyboard shortcuts
| Key | Does |
|---|---|
| 0-9 and . | Numbers |
| + - * / | Add, subtract, multiply, divide |
| ^ | Power, as in 2^10 |
| ( and ) | Brackets |
| % and ! | Percent and factorial |
| Enter or = | Equals |
| Backspace | Delete the last character |
| Esc | Clear |
You can also type function names like sqrt(2) or ln(10), use π by typing pi, and use ANS for the last answer.
Handy tricks
Multiplying without the × sign works where it’s clear: 2π, 3(4 + 1) and 2sqrt(9) all do what you’d expect. History keeps your last 30 calculations on this device, so you can close the tab and come back to them later.