Square Root Calculator
Square roots, cube roots and any nth root.
√144
- Perfect power
- Yes
- Check
- 12^2 = 144
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How this calculator works
The nth root is the number that, multiplied by itself n times, gives the original number.
Formula
ⁿ√x = x^(1/n)
Example
√144 = 12 and the cube root of 27 is 3.
When to use it
- Geometry and the Pythagorean theorem
- Standard deviation
- Area to side length conversions
Frequently asked questions
Can I take the square root of a negative number?
Not within the real numbers. The result is an imaginary number, such as √−9 = 3i.
What is a perfect square?
A number whose square root is a whole number, such as 16, 25 or 144.