XL: Rounding Numbers and Time to Specified Multiples

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Article ID: 32378 - View products that this article applies to.
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SUMMARY

The MROUND worksheet function returns a number that is rounded to a specific multiple. However, MROUND requires that the Analysis ToolPak add-in be installed before the function is available. If you do not want to install the Analysis ToolPak, you can use the ROUND worksheet function instead.

MORE INFORMATION

Rounding a Number

To round a number to the nearest multiple of "x" by using ROUND in Microsoft Excel, use the following syntax:
   =ROUND(<value or reference>/x,0)*x
				
For example, to round a number to the nearest multiple of 5, enter the following into a worksheet:
   A1: 17     B1: =ROUND(A1/5,0)*5
				
The result is 15.

The following formula, which uses the MROUND function, rounds the number 1.58 to the nearest fractional multiple of 0.5:
   =MROUND(1.58,0.5)
				
The result is 1.50.

NOTE: The MROUND function is installed with the Analysis Toolpak add-in. To load this add-in after you install it, click Add-ins on the Tools menu. In the Add-ins dialog box, click to select the Analysis ToolPak check box.

Rounding Time

To round time to the nearest multiple of "x" by using ROUND in Microsoft Excel, use the following syntax:
   =ROUND(<value or reference>*24/x,0)*x/24
				
Note that you must multiply the time by 24 to convert the time value to its decimal equivalent. In this example, 8:05 becomes the number 8.08333. It is converted back to a time value by dividing by 24 again at the end of the formula.

For example, the following formula, which uses the ROUND function, rounds the time 8:10 to the nearest quarter of an hour or the nearest 15 minutes:
   =ROUND(TIMEVALUE("8:10")*24/0.25,0)*0.25/24
				
The result is 8:15.

NOTE: You can refer to a cell address instead of using TIMEVALUE("8:05"), as in the following formula:
   A1: 8:10   B1: =ROUND(A1*24/0.25,0)*0.25/24
				
The following formula, which uses the MROUND function, rounds the time 8:05 to the nearest quarter of an hour or to the nearest 15 minutes:
   A1: 8:05   B1: =TIMEVALUE(HOUR(A1)&":"&MROUND(MINUTE(A1),15))
				
The result is 8:00.

REFERENCES

For more information about the ROUND function, click Contents and Index on the Help menu, click the Index tab in Excel Help, type the following text
round worksheet function
and then double-click the selected text to go to the "ROUND" topic. If you are unable to find the information you need, ask the Office Assistant.

Properties

Article ID: 32378 - Last Review: November 16, 2006 - Revision: 1.2
APPLIES TO
  • Microsoft Excel 97 Standard Edition
  • Microsoft Excel 95 Standard Edition
  • Microsoft Excel 5.0 Standard Edition
  • Microsoft Excel 98 for Macintosh
  • Microsoft Excel 5.0 for Macintosh
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kbhowto KB32378
Retired KB Content Disclaimer
This article was written about products for which Microsoft no longer offers support. Therefore, this article is offered "as is" and will no longer be updated.

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