Generate
SHA-1 Hash
Wrap long lines in the input and output
Text
Paste text to hash, or leave the box empty for the digest of zero bytes.
Hex digest
Generate
Paste text to hash, or leave the box empty for the digest of zero bytes.
SHA-1 is only for checking old systems that still publish a 40-character digest. Do not use it for new signatures, passwords or anything you need to keep safe.
The page hashes the UTF-8 bytes of the whole input. The text abc matches the published test vector. Uppercase hex is there when the old printout uses A-F.
MD5 is not offered. WebCrypto does not provide it, and this page will not invent one. Prefer SHA-256 for anything new.
SHA-1 is only for checking old systems. Do not use it to sign new data or to store a password.
No. WebCrypto does not offer MD5, and this page will not invent one.
The lowercase digest is a9993e364706816aba3e25717850c26c9cd0d89d. Uppercase hex prints those same digits with A-F.
No. This runs in your browser and the text you paste is never uploaded, logged or stored. Google Analytics records page views and feature use, never content.
Compute a SHA-256 message digest from any text in your browser. The hex updates as you type, and your text is never uploaded.
Compute a SHA-512 message digest from any text in your browser. The longer hex updates as you type, and your text is never uploaded.
Sign a message with HMAC-SHA256 in your browser. Put the key on the first line, then the text, and your text is never uploaded.
Generate placeholder words, sentences or paragraphs.
Generate version-4 UUIDs from cryptographic random bytes.
Encode text as a QR code and show it as an image.
Turn text into a valid JSON string literal, or decode one back to plain text.
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