√ Square Root Calculator
Calculate square roots, check perfect squares, and calculate squares.
Quick Examples
Quick Examples
Quick Examples
📋 Last 50 Calculations
What is a Square Root?
The square root of a number is a value that, when multiplied by itself, gives the original number.
For example: √144 = 12 because 12 × 12 = 144.
Important Facts
- √0 = 0
- √1 = 1
- √25 = 5
- √100 = 10
- Perfect squares have whole-number square roots.
- Non-perfect squares generally produce decimal square roots.
Square and Square Root Relationship
If a² = b, then √b = a.
Example: 15² = 225, therefore √225 = 15.