Math calculator
Square Root Calculator
Calculate the square root of a number for homework, geometry, estimates, and quick math checks.
Math
Square Root Calculator
Square Root
Result
Formula
result = sqrt(value)
This calculator uses the formula above and rounds the final answer to 4 decimal places for readability.
When to Use This Calculator
Use this square root calculator for quick math checks, schoolwork, planning, shopping, and everyday calculations. Enter the values requested by the form and review the result before using it in a worksheet, estimate, or note.
How to calculate it
Start with the inputs shown in the calculator, apply the formula result = sqrt(value), and then round the result if you only need a practical answer. The example table below shows common inputs so you can compare your result with a known calculation.
Example Calculations
| Example | Inputs | Result |
|---|---|---|
| Square root of 144 | value: 144 | 12 |
| Square root of 81 | value: 81 | 9 |
| Square root of 2 | value: 2 | 1.4142 |
Frequently Asked Questions
How does the square root calculator work?
It uses the formula result = sqrt(value). Enter the required values and the calculator displays the result rounded to 4 decimal places.
Is this square root calculator free?
Yes. The calculation runs locally in your browser and does not require an account.
Can I use this for school or everyday calculations?
Yes. It is designed for quick general-purpose calculations, homework checks, planning, and everyday math.