Hash Generator
Generate MD5, SHA-1, SHA-256, SHA-384 and SHA-512 digests from text or files, compute HMACs with a secret key, and verify a hash against an expected value — all in your browser.
About the Hash Generator
A cryptographic hash turns any input into a fixed-length fingerprint that changes completely with the smallest input change. Bytewrench's hash generator computes MD5, SHA-1, SHA-256 and other digests from your text instantly, using the browser's built-in Web Crypto API where possible.
Hashes are useful for verifying file integrity, generating checksums, deduplicating data and building cache keys. Everything is computed locally so your input stays private.
Generate MD5, SHA-1, SHA-256 and more from the same input at once.
Compare digests to verify that files or messages haven't changed.
Hashes recompute as you type, powered by native Web Crypto.
Your input never leaves the browser — ideal for sensitive strings.
Frequently asked questions
Which hash algorithm should I use?
Use SHA-256 for security-sensitive integrity checks. MD5 and SHA-1 are fast but cryptographically broken — only use them for non-security checksums or legacy compatibility.
Can I reverse a hash back to the original text?
No. Cryptographic hashes are one-way functions and cannot be decoded. Matching values is only possible by hashing a guess and comparing.
Is hashing the same as encryption?
No. Encryption is reversible with a key; hashing is a one-way fingerprint with no way back to the original input.
Is my input sent to a server?
No. Hashes are computed entirely in your browser.