Developer Tool
Hash Generator
Compute MD5, SHA-1, SHA-256 and SHA-512 instantly from text or file. 100% browser-side, no data ever sent.
MD5 · SHA-1 · SHA-256 · SHA-512
Text & Files
Checksum verify
Drop a file
or click to browse
Hash computed locally — no upload
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Results
MD5128 bits
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SHA-1160 bits
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SHA-256256 bits
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SHA-512512 bits
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Verify checksum
What are hash functions used for?
File integrity
Compare the hash of a downloaded file with the official hash to verify it hasn't been tampered with.
Password storage
Databases store password hashes, never plaintext. SHA-256 with a salt is the modern standard practice.
Digital signatures
SHA-256 is used in SSL/TLS signatures, X.509 certificates and version control systems like Git for commit hashing.
MD5 vs SHA-256
MD5 is fast but cryptographically broken (known collisions). Use SHA-256 for security. MD5 is still useful for non-security checksums.
FAQ
No. Hash functions are one-way by design. It is mathematically infeasible to recover the original input from a hash alone. This is precisely what makes them useful for security.
SHA-512 produces a hash twice as long (512 bits vs 256 bits) and is slightly faster on 64-bit processors. Both are secure. SHA-256 is more universally supported.
No. All computation happens in your browser via the native WebCrypto API. Nothing is ever transmitted. Files never leave your device.