Square Root Calculator
Calculate square roots, cube roots, nth roots, squares, cubes, and powers with precision.
√ (Square Root)
∛ (Cube Root)
Nth Root
Perfect Square?
Power & Exponent Calculator
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.
About this Square Root
Use this free square root calculator to calculate square roots with decimal precision. It is useful for math homework, geometry, estimates, construction measurements, and quick number checks. No signup is required, and the tool works on phones, tablets, and desktop browsers.