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, and 2016. You can find a version of this tip for the older menu interface of Excel here: Deriving Antilogs.
Program Successfully in Excel! John Walkenbach's name is synonymous with excellence in deciphering complex technical topics. With this comprehensive guide, "Mr. Spreadsheet" shows how to maximize your Excel experience using professional spreadsheet application development tips from his own personal bookshelf. Check out Excel 2013 Power Programming with VBA today!
Want to sum the values in the same cell on a range of worksheets? It's not as easy as summing a range on the same ...
Discover MoreWant to know how to move pieces of information contained in one cell into individual cells? This option exists if using ...
Discover MoreDo you need to total all the cells that are a particular color, such as yellow? This tip looks at three different ways ...
Discover MoreFREE SERVICE: Get tips like this every week in ExcelTips, a free productivity newsletter. Enter your address and click "Subscribe."
2017-10-26 15:17:02
Dennis Costello
All true, but "e^y" begs the question of where to dig up a value for e. 2.71828282 is of course just a rough approximation. Fortunately, there's a way around that: e = 10 ^ (1 / LN(10)) - in fact, e = x ^ (1 / LN(x)) for any positive value of x (other than x=1). The natural antilog of y is therefore
e ^ y = 10 ^ ( y / LN(10)).
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.
FREE SERVICE: Get tips like this every week in ExcelTips, a free productivity newsletter. Enter your address and click "Subscribe."
Copyright © 2022 Sharon Parq Associates, Inc.
Comments