Average True Range (ATR) Calculator
 The original Wilder's ATR calculation method plus 11 other variations of Average Range or Average True Range
 Any period length on each variation
 Charts (scales update automatically)
 Fast and simple – enter data and push a button (and change parameters if you want)
 Intuitive navigation – you can start using it immediately
 PDF guide explaining all the calculation methods
 Works in all versions of Excel

You can find more details about individual features, exact contents of the PDF guide, and screenshots below:
Supported Indicators and Calculation Methods
The calculator can calculate 12 different variations of Average Range or Average True Range:
4 Types of Range
 Range = high less low
 True Range = the greatest of high less low, high less previous close, and previous close less low
 % Range = Range divided by previous close
 % True Range = True Range divided by previous close
3 Average Methods
 Simple moving average
 Exponential moving average: a = 2/(n+1)
 Wilder's smoothing method: a = 1/n
Note: The original ATR as introduced by J. Welles Wilder Jr. is True Range + Wilder method.
You can set any period length on any of the variations.
The calculation methods are explained in chapter 4 of the PDF guide.
ATR Calculator PDF Guide
The PDF guide provides detailed instructions and notes for using the calculator and explains the differences between individual calculation methods. You can find an overview of the contents below:

Screenshots – This is How the Calculator Looks:
The main calculation sheet. You can calculate up to 3 different indicators at the same time (columns KM).
Here you can set parameters of the indicators. You can choose from 4 types of range (Range, True Range, % Range, and % True Range) and 3 averaging methods (simple moving average, exponential moving average, and the original Wilder's smoothing). You can set any period length in the yellow cells (K8M8).
The chart sheet displays 2 charts: the upper chart with price and the lower chart with the indicators.
Here you can set which of the indicators to display. Chart scales are adjusted automatically by a macro.
The sheet where you enter data. Pushing the button on the right will sort the data from oldest to newest, import it into the calculation sheet, and build indicator formulas. The macro will also check your data for any errors, such as missing prices or nonnumeric cells.
Excel Versions and Macros
The default version of the calculator uses Excel macros to make it convenient and easy to use. If you can't or don't want to use macros, there is also a macrofree version available.
All Excel Versions:
ATR_Calculator.xlsm = default version (all features, easiest to use)
ATR_MacroFree.xlsx = macrofree version (if you can't use macros)ATR_for_Excel_972003.xls = Excel 972003 version
ATR_for_Excel_972003_MacroFree.xls = macrofree Excel 972003 version
Every user gets access to all versions plus the PDF guide.

If you have any questions, please see FAQ or .