Square Root Calculator

Summary

Enter any non-negative number to get its square root as a decimal and in simplified radical form.

How it works

1. Type a non-negative number into the input field.
2. The calculator checks whether the number is a perfect square and displays the exact integer root if so.
3. For non-perfect-square integers the radical is simplified by factoring out the largest perfect-square factor.
4. The high-precision decimal result is shown rounded to 10 significant figures.
5. Click "Copy Result" to copy the decimal value to your clipboard.

Use cases

• Quickly find the square root of any number without a physical calculator.
• Simplify radical expressions for algebra homework or exam prep.
• Verify whether a number is a perfect square.
• Convert a surd to decimal form for numerical computation.
• Check simplified radical answers produced by a CAS or textbook.
• Compute approximate distances using the Pythagorean theorem.

Frequently Asked Questions