Calculator
Add, subtract, multiply, and divide with keyboard and history.
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Tool guide
Calculator: how it works
Practical information to understand the result and use this tool correctly.
About Calculator
A basic online calculator handles the four operations plus percent. Use the on-screen pad or your keyboard; session history shows recent results.
All math runs locally with standard floating-point precision — nothing is sent to a server for this tool.
Ideal when you need a quick answer without installing an app or signing up.
How to use it
- 1Enter the first number.
- 2Choose an operation (+, −, ×, ÷ or %).
- 3Enter the second number and press = or Enter.
Frequently asked questions
- Is this calculator free?
- Yes. It runs in the browser with no account, install, or payment.
- Can I use my keyboard?
- Yes. Digits, operators, Enter, Escape, and Backspace are supported.
- Are results stored online?
- No. Calculation is local; only your session history stays on the device.