# ROUNDDOWN

The ROUNDDOWN function rounds a number down towards zero to a specified number of digits.

## Syntax ๐

=ROUNDDOWN(`number`

, `num_digits`

)

`number` | The number you want to round down. |

`num_digits` | The number of digits to which you want to round down the `number` . |

## About ROUNDDOWN ๐

When you need to truncate a number towards zero to a specific number of decimal places or digits, ROUNDDOWN in Excel is the go-to function. It is handy for scenarios where you require a straightforward numerical approximation without any rounding up involved. This function is especially useful in financial calculations, data analysis, and various mathematical operations where precision matters. By employing ROUNDDOWN, you ensure that the desired level of accuracy is maintained in your calculations, aligning with your specific requirements.

## Examples ๐

Let's say you have the number 15.6789 and you want to round it down to 2 decimal places. The ROUNDDOWN formula would be: =ROUNDDOWN(15.6789, 2), resulting in 15.67.

Suppose you have the number -8.456 and you want to round it down to the nearest integer. The ROUNDDOWN formula would be: =ROUNDDOWN(8.456, 0), which would give you -9.

## Notes ๐

Remember that ROUNDDOWN always rounds towards zero, regardless of the sign of the number being rounded. If the `num_digits`

argument is negative, the number is rounded to the left of the decimal point to the specified number of digits. Be cautious while using negative values as they can lead to unexpected results.

## Questions ๐

**How does ROUNDDOWN differ from the ROUND function in Excel?**

The key difference between ROUNDDOWN and ROUND lies in the direction of rounding. ROUNDDOWN always rounds towards zero, truncating the decimal part, while ROUND follows standard rounding rules (rounds up with values >= 5). As such, ROUNDDOWN is more suitable when you specifically want to round down without any upward rounding.

**Can I use ROUNDDOWN to round a negative number?**

Yes, ROUNDDOWN can be used to round both positive and negative numbers. It always rounds towards zero, irrespective of the sign of the number being rounded.

**What happens if the num_digits argument in ROUNDDOWN is negative?**

If the `num_digits`

argument provided to ROUNDDOWN is negative, the function will round the number to the left of the decimal point. It effectively truncates the number to the specified negative number of decimal places.