Cube Root Calculator: The Complete Guide
Find the cube root of any number. Enter a value — positive or negative — to get its cube root, plus the square root and the cube of the number for reference.
Who the Cube Root Calculator is for
Students and anyone needing a quick cube root, including of negative numbers.
How to use the Cube Root Calculator
- Type your values into the fields above — pick your currency or units where the calculator offers them.
- Results update automatically as you type; there's no submit button and nothing is sent to a server.
- Adjust any input to compare scenarios, then copy the result with a single click.
How it works
The cube root of x is the value that, cubed, gives x (∛x). Unlike square roots, cube roots are defined for negative numbers, since a negative cubed stays negative.
Features
- Cube root (incl. negatives)
- Square root too
- Cube of the number
- Instant result
About cube roots
The cube root of a number is the value that, multiplied by itself three times, gives the original: ∛27 = 3. Cube roots are defined for negative numbers too — ∛(−8) = −2 — because a negative number cubed remains negative. They appear in volume and scaling problems.