Email list SHA-256 hasher
SHA-256 hash an email list in your browser. Lowercase, trim, skip duplicates, download TXT or CSV. Nothing is uploaded.
Paste emails, then Hash list.
How to use the Email list SHA-256 hasher
- Paste emails or a CSV.
- Hash with SHA-256. Existing hex hashes pass through.
- Download TXT (one hash per line) or CSV.
When to use this page
Use the platform pages when you are uploading to Meta, Google, TikTok, or LinkedIn. Use this page when you just need SHA-256 of an email column and a clean download.
Nothing is uploaded
Web Crypto stays in the browser.
Email list SHA-256 hasher FAQ
Is this the same math as Meta and Google?
Yes. SHA-256 of trimmed lowercase email.
What is the size limit?
About 50,000 addresses or 2 MB.