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Square Root Calculator

Calculate square and cube roots

Formula

√nSquare root
Find x such that x² = n
∛nCube root
Find x such that x³ = n
n²Square
n × n
n³Cube
n × n × n

Perfect Squares (1–100)

1²

1

2²

4

3²

9

4²

16

5²

25

6²

36

7²

49

8²

64

9²

81

10²

100

FAQ

What is a perfect square?

A perfect square is an integer that is the square of another integer. For example, 4, 9, 16, 25 are perfect squares because 2²=4, 3²=9, 4²=16, 5²=25.

How do you calculate a square root by hand?

For perfect squares, find the integer n where n×n equals your number. For non-perfect squares, estimate between the two nearest perfect squares and refine.