Calculator

How to use

Click the number buttons or use your keyboard to enter a value. Select an operator (+, −, ×, ÷) and enter the second number. Press = or Enter to see the result. Use % to apply percentage, and ± to toggle positive/negative. Press AC to clear everything or C to clear the last entry. Previous calculations appear in the history list below the calculator — click any entry to recall that result into the current calculation.

Why use this tool

A fast, distraction-free calculator you can access instantly in any browser tab without installing an app. Full keyboard support means you never need to take your hands off the keyboard during data-entry tasks. The calculation history lets you review and reuse previous results — handy for multi-step calculations. No ads, no sign-up, no data sent to any server. Works offline.

FAQ

Does the calculator support keyboard input?

Yes. Numbers 0-9, +, -, *, /, Enter, Backspace, Escape, and % are supported.

What operations does the calculator support?

Addition (+), subtraction (−), multiplication (×), division (÷), percentage (%), and sign toggle (±). The display auto-scales for large numbers. Calculation history lets you recall previous results by clicking on them.

How do I use the percentage button?

Press % to convert the current number to a percentage. For example, to calculate 20% of 150: enter 150, press ×, enter 20, press %, then =. The result is 30.

Is there a history feature?

Yes. Previous calculations appear in a history list below the calculator. Click any history entry to recall that result into the current calculation.