Google Customer Match email hasher
SHA-256 hash emails for Google Ads Customer Match in your browser. Normalize, skip duplicates, download hashes only. Nothing is uploaded.
Paste emails, then Hash list.
How to use the Google Customer Match email hasher
- Paste emails or open a CSV with an email column.
- Hash with SHA-256. Already-hashed rows stay as hex.
- Download hashes and upload the file in Google Ads Customer Match. Keep the original list off that upload.
Customer Match format
Google Ads Customer Match accepts SHA-256 of normalized emails. This page locks SHA-256, lowercases, and trims. The CSV header is email; the cells are hashes.
Nothing is uploaded
Hashing stays in the browser. We do not send the list to Google or to Geek University.
Google Customer Match email hasher FAQ
Is this for Google Customer Match?
Yes. Hash first-party emails here, then upload the hash file in Google Ads.
Can I use SHA-1?
Not for Customer Match. This page uses SHA-256 only.
What about already hashed rows?
A 64-character hex string is left alone.