Math Calculator

Type a full expression in one line and press = or Enter to calculate. You can switch between the Numbers, Functions, and Letters keypads with the tabs, or type directly on your physical keyboard — both work the same way.

You can choose with the DEG/RAD buttons at the top of the display. sin, cos, tan, asin, acos, and atan all follow whichever mode is selected.

Pressing = tells you exactly how many opening parentheses are still unclosed, so you can fix the expression and try again.

Tapping the button on the Functions keypad inserts something like nPr(,) with the cursor placed right after the opening parenthesis. Type the first value, then the second after the comma.

Once a calculation is done, click the copy button under the display, or press Ctrl+C (Cmd+C on Mac) to copy the result to your clipboard.

No. Every calculation happens entirely in your browser and is never sent to or stored on a server.