Cube Root Calculator
A free, browser-based calculator. Runs entirely in your browser — no sign up, nothing stored.
100% FreeRuns in your browserBasic
Enter Values
Enter your values and press Calculate to see results.
How to use this calculator
- Enter a number.
- Read its cube root.
How it works
The cube root of x is the value that, multiplied by itself three times, gives x. Negatives have a real cube root (−27 → −3).
Worked example
27. Cube root = 3, because 3 × 3 × 3 = 27.
Common mistakes
- Confusing cube root with square root — cube root undoes a power of 3.
- Assuming negatives have no root — they do (unlike square roots).
Frequently asked questions
Can you cube-root a negative number?
Yes — the cube root of a negative is negative, e.g. −27 → −3.
Related tools
Tip: Enter any known values to calculate the remaining results.
All calculations run in your browser. Your inputs are never saved or transmitted.