Cube root calculator
Calculate real cube roots, including negative inputs, with consistent display precision.
Runs in your browserEvery computation happens in your browser — your data never leaves this device.
Radicand
Result
Cube root
Enter a number to calculate
Decimal places: 0 · : 0
What this tool does
- Find cube roots
- Verify cube results
Example
Input
8
Output
∛8 = 2
Math.cbrt supports negative inputs.
Frequently asked questions
Can it handle negatives?
Yes, the root is negative.
What is the default precision?
Six decimal places.
What happens for empty input?
An input error is shown.
Keywords：立方根三次方根cube root根号