# CBRT function
<a name="CBRT"></a>

 The CBRT function is a mathematical function that calculates the cube root of a number. 

## Syntax
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```
CBRT (number)
```

## Argument
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CBRT takes a DOUBLE PRECISION number as an argument. 

## Return type
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CBRT returns a DOUBLE PRECISION number. 

## Examples
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Calculate the cube root of the commission paid for a given transaction: 

```
select cbrt(commission) from sales where salesid=10000;

cbrt
------------------
3.03839539048843
(1 row)
```