Hash Generator
Generate SHA-256, SHA-1, and SHA-512 hashes locally — no data leaves your browser
Input Text
Privacy Note
All hashing is performed locally in your browser using the Web Crypto API. No text or hash values are transmitted to any server.
Hash Values
SHA-256
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SHA-1
—
SHA-512
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MD5
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About Cryptographic Hashes
A hash function converts any input into a fixed-length string. The same input always produces the same hash (deterministic), but even a single character change completely changes the output (avalanche effect). Hashes are one-way — you cannot recover the original from the hash.
SHA-256 is the current standard for most security applications (TLS, Bitcoin, code signing). SHA-1 is deprecated for security but still used for checksums. SHA-512 offers higher security. MD5 is broken for security but still used for non-security checksums. This tool uses the browser's built-in Web Crypto API.
lightbulb Example
Input: "hello"
1SHA-256: 2cf24dba5f...
2Any change → completely different hash
✓ Use SHA-256 for all security needs