# Excel ROUNDDOWN Function

The Excel ROUNDDOWN function returns a number rounded down to a given number of decimal places. Unlike standard rounding, where only numbers less than 5 are rounded down, ROUNDDOWN rounds all numbers 1-9 down.

**number**- The number to round down.**num_digits**- The number of digits to which number should be rounded down.

The ROUNDDOWN function works like the ROUND function except when rounding, the ROUNDDOWN function will always round the numbers 1-9 down.

The ROUNDDOWN function can round either to the left or right of the decimal point.

If **num_digits** > 0, **number** is rounded down to the specified number of decimal places to the right of the decimal point.

If **num_digits** < 0, **number** is rounded down to the left of the decimal point (i.e. to the nearest 10, 100, 1000, etc.).

If **num_digits** = 0, **number** is rounded down to the nearest integer.

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