Square Root Calculator
Find square roots, approximate decimal values, and simplified radical form for positive whole numbers.
Find a square root
Answer
6sqrt(2)
- Simplified radical: sqrt(72) = 6sqrt(2)
How to use the square root calculator
Use this calculator to find the decimal square root and, for whole numbers, the simplified radical form.
- Enter a nonnegative number.
- The calculator computes the decimal square root.
- If the input is a whole number, it also simplifies the radical.
Formula or method
sqrt(n) is the nonnegative number whose square equals n.
Worked examples
Perfect square
Problem: sqrt(49)
Solution: 7 because 7^2 = 49.
Simplified radical
Problem: sqrt(72)
Solution: sqrt(72) = sqrt(36 * 2) = 6sqrt(2).