Explanation
Excel contains a number of rounding functions. Two of these functions, the INT function and the TRUNC function will return the integer portion of a number that contains a decimal value.
The INT function behaves a bit differently with negative values, so in this example we are using the TRUNC function. The TRUNC function simply truncates (i.e. removes) decimal values if they exist – it doesn't do any rounding.
In the example shown, cell C6 contains this formula:
=B6-TRUNC(B6)
The TRUNC function returns the integer portion of the number which is then subtracted from the original value. The result is the decimal portion of the number.
If the original number is an integer to begin with, the result of this formula is zero.
Related formulas
Get integer part of a number
Related functions
TRUNC Function
The Excel TRUNC function returns a truncated number based on an (optional) number of digits. For example, TRUNC(4.9) will return 4, and TRUNC(-3.5) will return -3. The TRUNC function does no rounding, it simply truncates as specified.
