# Welcome to Calculators.net

Home of free online calculators — **Calculators.net**'s mission statement is to be the world's largest and most comprehensive collection of online calculators on the Web.

**Calculators.net** provide a seemingly endless array of handy and useful calculators along with plenty of conversion tools, organized by a large variety of categories, from math & science to finance, health & everyday cooking — and it's always **FREE**!

Every nonnegative real number a has a unique nonnegative square root, called the principal square root, which is denoted by √a, where √ is called the radical sign or radix. For example, the principal square root of 9 is 3, denoted √9 = 3, because 32 = 3. • 3 = 9 and 3 is nonnegative.

(3.55 / 11 votes)

### Citation

#### Use the citation below to add this **Square Root Calculator** to your bibliography:

"Square Root" *Calculators.net.* STANDS4 LLC, 2021. Web. 21 Apr. 2021. <https://www.calculators.net/calculators/square-root>.

## We need you!

### Help us build the largest calculators collection on the web!

Thanks for your vote! We truly appreciate your support.