About This Calculator
This free online calculator handles all everyday arithmetic operations. Whether you need a quick addition, a percentage calculation, or a square root, this tool works exactly like the calculator app on your phone — no download required.
Special functions include: % (percentage of current value), √ (square root), x² (square/power), 1/x (reciprocal), and +/− (change sign). Press C to clear all, or ⌫ to delete the last digit.
Keyboard Support
You can type numbers and operators directly from your keyboard. Press Enter or = to calculate, Escape to clear, and Backspace to delete the last digit.