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This article describes the formula syntax and usage of the TRUNC function in Microsoft Excel.

## Description

Truncates a number to an integer by removing the fractional part of the number.

## Syntax

TRUNC(number, [num_digits])

The TRUNC function syntax has the following arguments:

• Number    Required. The number you want to truncate.

• Num_digits    Optional. A number specifying the precision of the truncation. The default value for num_digits is 0 (zero).

## Remark

TRUNC and INT are similar in that both return integers. TRUNC removes the fractional part of the number. INT rounds numbers down to the nearest integer based on the value of the fractional part of the number. INT and TRUNC are different only when using negative numbers: TRUNC(-4.3) returns -4, but INT(-4.3) returns -5 because -5 is the lower number.

## Example

Copy the example data in the following table, and paste it in cell A1 of a new Excel worksheet. For formulas to show results, select them, press F2, and then press Enter. If you need to, you can adjust the column widths to see all the data.

Formula

Description

Result

=TRUNC(8.9)

Truncates 8.9 to return the integer part (8).

8

=TRUNC(-8.9)

Truncates a negative number to return the integer part (-8).

-8

=TRUNC(0.45)

Truncates a number between 0 and 1, returning the integer part (0).

0

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