This article describes the formula syntax and usage of the ERF function (function: A prewritten formula that takes a value or values, performs an operation, and returns a value or values. Use functions to simplify and shorten formulas on a worksheet, especially those that perform lengthy or complex calculations.) in Microsoft Excel.
Description
Returns the error function integrated between lower_limit and upper_limit.
Syntax
ERF(lower_limit,[upper_limit])
The ERF function syntax has the following arguments (argument: A value that provides information to an action, an event, a method, a property, a function, or a procedure.):
 Lower_limit Required. The lower bound for integrating ERF.
 Upper_limit Optional. The upper bound for integrating ERF. If omitted, ERF integrates between zero and lower_limit.
Remarks
 If lower_limit is nonnumeric, ERF returns the #VALUE! error value.
 If upper_limit is nonnumeric, ERF returns the #VALUE! error value.
Example
The example may be easier to understand if you copy it to a blank worksheet.
How do I copy an example?
 Select the example in this article. If you are copying the example in Excel Online, copy and paste one cell at a time.
Important: Do not select the row or column headers.
Selecting an example from Help
 Press CTRL+C.
 Create a blank workbook or worksheet.
 In the worksheet, select cell A1, and press CTRL+V. If you are working in Excel Online, repeat copying and pasting for each cell in the example.
Important: For the example to work properly, you must paste it into cell A1 of the worksheet.
 To switch between viewing the results and viewing the formulas that return the results, press CTRL+` (grave accent), or on the Formulas tab, in the Formula Auditing group, click the Show Formulas button.
After you copy the example to a blank worksheet, you can adapt it to suit your needs.

A 
B 
Formula 
Description (Result) 
=ERF(0.74500) 
Error function integrated between 0 and 0.74500 (0.707929) 
=ERF(1) 
Error function integrated between 0 and 1 (0.842701) 
