Square Root Calculator

Calculate square roots, cube roots, nth roots, squares, cubes, and powers with precision.

Number

Decimal places

Nth root (n)

Power & Exponent Calculator

Base (n)

Exponent

Common Square Roots (1–20)

How to use

Enter a number in the top field and click Calculate to see its square root, cube root, and nth root.
Set the Nth root field to any value — for example, 4 gives you the 4th root (⁴√n).
Adjust Decimal places to control the precision of results (2–10 places).
Use the Power Calculator to compute n² (square), n³ (cube), or any base raised to an exponent.
The common square roots table below shows √1 through √20 for quick reference.
A Perfect Square badge tells you whether the number is a whole-number square.