Tools

SHA-1 hash

SHA-1 hash text in your browser. Whole paste or one digest per line. Nothing is uploaded.

Paste text, then Hash. UTF-8 SHA-1.

How to use the SHA-1 hash

  1. Paste the text.
  2. Hash the whole paste, or each line.
  3. Copy the 40-character hex digest.

Why SHA-1 still exists

Some older checksums and Git object names still show SHA-1. Do not use it for new password storage or HMAC of secrets you care about. Prefer SHA-256 unless a protocol names SHA-1.

Nothing is uploaded

Digest stays in the tab. Same size caps as SHA-256.

SHA-1 hash FAQ

Collision warning?

SHA-1 is broken for collision resistance. This page only computes the digest you asked for.

Email lists?

Google and Meta audiences want SHA-256, not SHA-1.

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