# Excel INT Function

The Excel INT function returns the integer part of a decimal number by rounding down to the integer. Note the INT function rounds down, so negative numbers become *more negative*. For example, while INT(10.8) returns 10, INT(-10.8) returns -11.

**number**- The number from which you want an integer.

The INT function returns the integer part of a decimal number, *after rounding down*.

### Example #1 - positive numbers

When numbers are positive, the INT function always rounds *down* to the next lowest whole number:

### Example #2 - negative numbers

When rounding negative numbers, the INT function will round down away from zero:

### INT vs TRUNC

INT is similar to the TRUNC function because they both can return the integer part of a number. However, TRUNC simply truncates a number, while INT actually rounds a number down to an integer. With positive numbers, and when TRUNC is using the default of 0 for num_digits, both functions return the same results. With negative numbers, the results can be different. INT(-3.1) returns -4, because INT rounds down to the lower integer. TRUNC(-3.1) returns -3. If you simply want the integer part of a number, you should use TRUNC.

### Rounding functions in Excel

Excel provides a number of functions for rounding:

- To round normally, use the ROUND function.
- To round to the nearest multiple, use the MROUND function.
- To round
*down*to the nearest specified*place*, use the ROUNDDOWN function. - To round
*down*to the nearest specified*multiple*, use the FLOOR function. - To round
*up*to the nearest specified*place*, use the ROUNDUP function. - To round
*up*to the nearest specified*multiple*, use the CEILING function. - To round
*down*and return an integer only, use the INT function. - To truncate decimal places, use the TRUNC function.

### Notes

- Use the INT function when you want the integer part of a decimal number, and it's OK to always round down.
- Use the TRUNC function if you only want the exact the integer part of both negative and positive numbers.