Please Note: This article is written for users of the following Microsoft Excel versions: 2007, 2010, 2013, and 2016. If you are using an earlier version (Excel 2003 or earlier), this tip may not work for you. For a version of this tip written specifically for earlier versions of Excel, click here: Rounding Up to the Next Half.

Rounding Up to the Next Half

by Allen Wyatt
(last updated January 30, 2016)

3

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 (11927) applies to Microsoft Excel 2007, 2010, 2013, and 2016. You can find a version of this tip for the older menu interface of Excel here: Rounding Up to the Next Half.

Author Bio

Allen Wyatt

With more than 50 non-fiction books and numerous magazine articles to his credit, Allen Wyatt is an internationally recognized author. He is president of Sharon Parq Associates, a computer and publishing services company. ...

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What is 8 + 3?

2016-02-09 16:30:37

Chris G

You are correct "Bill H". I have 2013 and Ceiling.Math has an option for changing the mode so that it rounds away from zero.
Ceiling.Math(-2.1, 0.5) = -2.0
Ceiling.Math(-2.1, 0.5, 1) = -2.5


2016-01-31 07:21:52

Michael (Micky) Avidan

@Bill H,
You can still use CEILING with a "little twist":
=CEILING(A1,(A1>0)-0.5)
--------------------------
Michael (Micky) Avidan
“Microsoft® Answers" - Wiki author & Forums Moderator
“Microsoft®” MVP – Excel (2009-2016)
ISRAEL


2016-01-30 06:41:25

Bill H

I don't think that CEILING rounds away from zero. For example, CEILING(-2.1,.5) yields -2.0. (I'm using Excel 2010.)


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