Google Sheets REGEXREPLACE Function
This post will guide you how to use Google Sheets REGEXREPLACE function with syntax and examples.
Description
The Google Sheets REGEXREPLACE function is to replace a part of a text string with a different substring using regular expressions.
The REGEXREPLACE function can be used to replace a substring from a text string according to a given regular expression in google sheets.
The REGEXREPLACE function is a buildin function in Google Sheets and it is categorized as a Text Function. And The REGEXREPLACE function is one of the three REGEX functions (REGEXEXTRACT, REGEXMATCH and REGEXREPLACE )in google sheets.
Syntax
The syntax of the REGEXREPLACE function is as below:
=REGEXREPLACE (text, regular_expression, replacement)
Where the REGEXREPLACE function arguments are:
 text This is a required argument. The text string that you want to extract a substring based on regular expression.

regular_expression – This is a required argument. The
Regular_expression
is a regular expression. It can be used to match the part of the text that you want to extract. The regular expression argument should be entered in doublequote characters. AndRegular_expression
is a search patterns that allow you to find a certain patterns in original text string.  Replacement – The text which will be inserted into the original text.
Note:
 The REGEXREPLACE function takes two arguments. It checks whether a piece of text matches a given regular expression.
 The REGEXREPLACE function only works with text value as its first argument and returns a text result. If you wish to return a numeric value, and you need to use VALUE function in combination with the REGEXREPLACE function. If the input value is a number, and you can use the TEXT function to convert them.
 Google Sheets supports RE2 for regular expressions.
Google Sheets REGEXREPLACE Function Examples
The below examples will show you how to use google sheets REGEXREPLACE function to replace a substring from a text according to a regular expression.
#1 Replace all “google” keywords with “mygoogle” text string, and you can use the REGEXREPLACE function with a regular expression “google”, type:
=REGEXREPLACE(B1,"google","mygoogle") //it returns “mygoogle 2021 sheets 2020”
#2 Replace all word with “mygoogle” substring from a string in cell B1, and you can use the REGEXREPLACE function with a regular expression “\w+”, type:
=REGEXREPLACE(B1,"\w+","mygoogle") //it returns “mygoogle mygoogle mygoogle mygoogle”
#3 Replace the last whole word from a string using REGEXREPLACE function with a regular expression “\w+$”, type:
=REGEXREPLACE(B1,"\w+$","mygoogle") // it returns “google 2021 sheets mygoogle”
#4 Replace all numbers with “2025” from a string in cell B1 and you can use the REGEXREPLACE function with a regular expression “\d+”, type:
=REGEXREPLACE(B1,"\d+","2025") // it returns “google 2025 sheets 2025”
#5 Replate the last number with “2025” number from a string in cell B1, and you can use the REGEXREPLACE function with a regular expression “\d+$”, type:
=REGEXREPLACE(B1,"\d+$","2025") // it returns “google 2021 sheets 2025”