Build a Regular Expression Formula

When you want to pull out only numbers or phone numbers.

What you enter is never uploaded. Everything is processed on this device.

1Enter the cell and the pattern
2Choose the kind
3Copy the formula

Text cell (such as A2) Pattern (such as \d+) Kind Replacement text (for REPLACE, may be empty) Case Regular expression formula Whole-column formula

Done

🔒 Your files are never sent to an external server. Everything is processed safely inside this browser.

Tools often used together

Regex TesterTest regular expressions.

Build a SUBSTITUTE FormulaBuild text replacement formulas.

Build a SPLIT FormulaBuild formulas that split text at a delimiter.

Merge PDFsCombine PDFs into one.

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How to use

Enter the cell and the pattern.
Choose the kind.
Copy the formula and paste it into a cell.

How it works

EXTRACT takes the matching part, MATCH checks for a match and REPLACE replaces it.
A whole-column version is built too.

Notes

The formula is for Google Sheets.
\d means a digit and \w a letter or digit.

FAQ

Is what I enter sent anywhere?

No. Everything is processed inside the browser on your device.

Do I need to upload a file?

No. The formula is built only inside the browser.

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Guides for this tool

How to Write Regular Expression Formulas (Build It Automatically, Free)Extracting Numbers Checking for a Match Replacing Text Upper and Lower Case What to Do When It Does Not Work Regular Expression Builder Without Uploading

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