Arithmetic
Type on your keyboard or click the keys. Enter or = to solve, Esc to clear.
About this tool
A no-frills four-function calculator for everyday arithmetic — add, subtract, multiply, and divide. Each key press builds the expression shown in the small line above the main display, so you can see exactly what you're about to solve.
Works fully with your keyboard: type numbers and operators directly, press Enter or = to solve, Backspace to remove the last character, and Esc to clear everything.
Keyboard shortcut
Esc
Clears the current expression instantly — faster than reaching for the C key with your mouse.