How to use this square root calculator
This is the main square root calculator online. It focuses on the highest-value square-root searches: decimal answer, simplified radical form, perfect-square check, positive and negative roots, and clear steps for numbers such as √72, √50, √2 and √144.
- Enter the values requested in the calculator fields.
- Press Calculate to see the answer, exact form and decimal form when available.
- Review the steps and formula so you can understand the calculation, not just copy the answer.
Formula: √x is the number r where r² = x
Examples
- √72
- √144
- √2
Examples help confirm whether your input is in the right format. When a calculator has multiple modes, choose the option that matches the type of problem you are solving.
When this tool is useful
The Square Root Calculator is useful for homework checks, quick study notes, worksheet answers, tutoring sessions and everyday math verification. It is designed to be practical on a phone screen, with visible buttons and readable output.