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Rounding Up to the Next Half

Please Note: This article is written for users of the following Microsoft Excel versions: 97, 2000, 2002, and 2003. If you are using a later version (Excel 2007 or later), this tip may not work for you. For a version of this tip written specifically for later versions of Excel, click here: Rounding Up to the Next Half.

Terry has a need to round numbers up to the next 0.5. This means that a number such as 1.1 would round up to 1.5, but 1.6 would round up to 2.0. He tried using MROUND, but it only rounds to the nearest half (1.1 becomes 1.0 and 1.6 becomes 1.5).

Excel provides several different functions that you can use for different rounding purposes, such as ROUND, ROUNDUP, ROUNDDOWN, MROUND, FLOOR, CEILING, etc. Each of these has been discussed fully in other issues of ExcelTips. In this particular instance, CEILING would probably be the best solution:

=CEILING(A1,0.5)

This rounds the value in A1 upwards, to the next half. Actually, CEILING rounds away from 0, which means that positive numbers are rounded up but negative numbers are rounded down, away from zero. (For example, -1.1 would be rounded to -1.5, not to 1.0.)

Of course, there are multiple ways to do various tasks in Excel, and this type of rounding is no exception. If you would rather use ROUNDUP instead of CEILING, you could use the following formula:

=ROUNDUP(A1*2,0)/2

If you prefer to use MROUND, you could do the following:

=MROUND(A1+0.24999999,0.5)

This works because you are adding a value (0.249999) that always pushes MROUND over the half-way "tipping point" to force the result upwards.

These are just a few of the easy ways to accomplish the desired result. There are many other ways using the other rounding functions, as well.

ExcelTips is your source for cost-effective Microsoft Excel training. This tip (4079) applies to Microsoft Excel 97, 2000, 2002, and 2003. You can find a version of this tip for the ribbon interface of Excel (Excel 2007 and later) here: Rounding Up to the Next Half.

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Comments for this tip:

Master    15 Apr 2016, 06:52
Wrong formula.
Ceiling (1.1,0.5) = 2 not 1.5
Ceiling (1.6,0.5) = 2 not 1.5
Keith Leonard    01 Oct 2015, 10:54
When a negative numbers like -0.5 is shown it is getting rounded up but I would like it to be rounded down to zero and positive numbers 0.5 are rounded away from zero as shown in my formula below which is how I want it shown. Can any one help with this problem.

      =ROUND(SUM(B48*(113/113)+64.5-71),0)
MGD    17 Sep 2015, 05:17
So, if this is how to round it to 0.5 and 0.0, how do you program it to round to 0.5, 0.9 and 0.0?

Thanks in advance.
trevor    01 Aug 2014, 10:53
do you have instructions on how to set this up. Im not too clever beyond the basics with excel.

thanks
 
 

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