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If 0 < matches.Count Then If (0 = instance_num) Then Regex.ignorecase = True End If Set matches = regex.Execute(text) Regex.MultiLine = True If True = match_case Then Set regex = CreateObject( "VBScript.RegExp") Public Function RegExpReplace(text As String, pattern As String, text_replace As String, Optional instance_num As Integer = 0, Optional match_case As Boolean = True) As String Dim text_result, text_find As String Dim matches_index, pos_start As Integer On Error GoTo ErrHandle Luckily, the RegExp object already exists in VBA, and we are using this object in the below code: To be able to use regexes in your formulas, you need to create your own function. Find and replace text in Excel using Regex ToolsĪs it's generally known, built-in Excel functions do not support regular expressions.To find a string that matches some pattern and replace it with something else, regular expressions are indispensable. Why would one want to complicate things with regexes? Because Excel's standard features can only process an exact string that you specify. When it comes to changing one piece of text to another, Microsoft Excel provides a number of options to choose from including the Find and Replace tool and a couple of substitution functions. The Regex Replace function is missing in your Excel? This tutorial shows how to quickly add it to your workbooks, so you could use regular expressions to replace text strings in Excel.