Please Note: This article is written for users of the following Microsoft Excel versions: 2007, 2010, 2013, 2016, 2019, Excel in Microsoft 365, and 2021. 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: Deriving Antilogs.

Deriving Antilogs

Written by Allen Wyatt (last updated December 10, 2022)
This tip applies to Excel 2007, 2010, 2013, 2016, 2019, Excel in Microsoft 365, and 2021


2

Excel allows you to use quite a few different trigonometric functions in your worksheets. If you are big into trig, you may wonder why there are no functions that derive antilogs.

An antilog in Excel is technically defined as the inverse of the LOG10 function. The LOG10 function means the logarithm in base 10 of a number. Given that definition, the antilog, or inverse log, of any number is simply 10 raised to that number. For instance, the base-10 log of 4 is 0.60206, and the base-10 antilog of 4 is 10,000 (10 raised to the fourth power). This also means that the base-10 antilog of the base-10 log of 4 is, again, 4. (Raising 10 to the 0.60206 power is 4.)

The following table shows how you would derive the antilogs of the different log functions within Excel.

Base Number Log Antilog (Power)
x y =LOG(x,y) =x^y
e y =LN(y) =e^y
10 y =LOG10(y) =10^y

ExcelTips is your source for cost-effective Microsoft Excel training. This tip (12486) applies to Microsoft Excel 2007, 2010, 2013, 2016, 2019, Excel in Microsoft 365, and 2021. You can find a version of this tip for the older menu interface of Excel here: Deriving Antilogs.

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. ...

MORE FROM ALLEN

Quickly Clearing Array Contents

An array of variables is a powerful element of VBA programming. If you want to clear what is stored in an array, here's a ...

Discover More

Countering Compressed Columns

If you open a workbook and find that the width of some of your columns has been changed, the discovery can be ...

Discover More

Aligning Plus/Minus Symbols

Scientific writing often involves the use of special symbols, such as the plus/minus symbol. If you want to align these ...

Discover More

Save Time and Supercharge Excel! Automate virtually any routine task and save yourself hours, days, maybe even weeks. Then, learn how to make Excel do things you thought were simply impossible! Mastering advanced Excel macros has never been easier. Check out Excel 2010 VBA and Macros today!

More ExcelTips (ribbon)

Criteria-Based Counting in a Filtered Column

The filtering capabilities of Excel are excellent, providing you with great control over which records in a worksheet are ...

Discover More

Where Is that Text?

Looking for a formula that can return the address of a cell containing a text string? Look no further; the solution is in ...

Discover More

Extracting a Pattern from within Text

If you have a large amount of data in a worksheet and you want to extract information from the text that meets certain ...

Discover More
Subscribe

FREE SERVICE: Get tips like this every week in ExcelTips, a free productivity newsletter. Enter your address and click "Subscribe."

View most recent newsletter.

Comments

If you would like to add an image to your comment (not an avatar, but an image to help in making the point of your comment), include the characters [{fig}] (all 7 characters, in the sequence shown) in your comment text. You’ll be prompted to upload your image when you submit the comment. Maximum image size is 6Mpixels. Images larger than 600px wide or 1000px tall will be reduced. Up to three images may be included in a comment. All images are subject to review. Commenting privileges may be curtailed if inappropriate images are posted.

What is 3 + 0?

2022-12-10 06:42:11

Mike J

Re my last post, Now I've got it wrong

Line 1 should be

x y z =LOG(y,x) =x^z

The spacing looked fine when I posted it. This site does sometimes mess up formatting.


2022-12-10 05:43:13

Mike J

I think the first example should be =log(y,x)

Showing e^y can be calculated by =exp(y) would have been helpful too.

Base   Number   Log   Antilog (Power)
x y   z =LOG(y,x)   =y^z
e y z =LN(y)   =e^z or =exp(z)
10 y z =LOG10(y)   =10^z

Is less confusing.


This Site

Got a version of Excel that uses the ribbon interface (Excel 2007 or later)? This site is for you! If you use an earlier version of Excel, visit our ExcelTips site focusing on the menu interface.

Newest Tips
Subscribe

FREE SERVICE: Get tips like this every week in ExcelTips, a free productivity newsletter. Enter your address and click "Subscribe."

(Your e-mail address is not shared with anyone, ever.)

View the most recent newsletter.