FREE CALCULATOR
Calculator
A fast, simple online calculator for everyday math. Add, subtract, multiply, and divide, with percent and full keyboard support.
Tip: you can use your keyboard. Number keys, + - * /, Enter for equals, and Backspace to delete.
Why Use Our Calculator?
Everyday Math, Instantly
Add, subtract, multiply, and divide with a clean, easy-to-read display. Perfect for quick sums, bills, and homework.
Full Keyboard Support
Type with the number keys and plus, minus, star, and slash. Press Enter for equals and Backspace to delete the last digit.
Percent and Sign Change
Apply a percentage with the % key and flip between positive and negative with the +/- key in one tap.
Calculation History
Your recent calculations are listed below the keypad so you can glance back at earlier results.
Works on Any Device
Large, touch-friendly buttons make it just as easy to use on a phone or tablet as on a desktop.
Free and Private
No sign-up and no installation. Every calculation runs locally in your browser.
Frequently Asked Questions
Can I use my keyboard with this calculator?
Yes. Use the number keys to enter digits, plus, minus, star, and slash for the operations, Enter or the equals key for the result, Backspace to delete, and Escape to clear everything.
What does the % key do?
It converts the number on the display to its percentage value by dividing it by 100. For example, entering 50 and pressing % gives 0.5.
What does the +/- key do?
It flips the sign of the current number between positive and negative. It is handy for entering negative values or subtracting a result.
Does it keep a history of my calculations?
Yes. Each completed calculation is added to a short history list below the keypad. You can clear the history at any time.
Is there a more advanced version?
Yes. If you need trigonometry, logarithms, powers, roots, and memory functions, try the Scientific Calculator instead. This page is the simple, everyday version.
Is this calculator free?
Yes. It is completely free, runs entirely in your browser, and needs no sign-up or installation.
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