Square Root Calculator
Square root, cube root and any custom exponent — for any number you enter.
Inputs
Result
Square root
12.0000
∛ 5.2415 · 144^2 = 20,736
Visual breakdown
Number
144
√n
12
∛n
5.2415
n^2
20,736
Formula
√n is the value x such that x² = n. Cube root: x³ = n. General power: nᵉ uses real-number exponentiation.
Example
√144 = 12; ∛27 = 3; 2¹⁰ = 1,024.
Frequently asked
Why is √(-1) blank?
The square root of a negative number is imaginary; this calculator returns no result for it.
Does ∛(-8) work?
Yes — the cube root of a negative real number is the negative real cube root, e.g. ∛(-8) = -2.
Can I raise to a fractional power?
Yes — try 0.5 for the square root, or 1/3 ≈ 0.3333 for the cube root.