Square Root Calculator
Calculate the principal square root of a non-negative number quickly with clear inputs and an instant result on mobile or desktop.
Square Root Calculator
Tool inputs are not stored, and private values stay out of analytics.
Result
How it works
Enter the requested values in the Square Root Calculator, then calculate to see the result and its useful supporting details.
The calculator uses this method: find the value that multiplied by itself equals the entered number. Processing happens in the browser, so you can adjust values, recalculate, and review the output before copying it.
Examples
Worked example
The square root of 144 is 12.
Compare inputs
Change one value in the Square Root Calculator and compare the new output to understand its effect.
FAQ
How do I use the Square Root Calculator?
Enter the values shown in the form, check any units, then select the calculate button.
Does the calculator save entered numbers?
No. The calculation runs in the browser and field values are not sent as analytics data.
How accurate is the result?
Check inputs and rounding first, and verify official or critical decisions with the appropriate source.