Free Hash Generator
Generate MD5, SHA-1, SHA-256, SHA-384, and SHA-512 hashes from text or files — instantly, with HMAC support. Works as an online hash generator, SHA-512 file checksum tool, and hash comparison tool in one. Nothing is ever uploaded.
HMAC mode
Generate keyed-hash message authentication codes
Drop a file here, or browse
Any file type, up to 2 GB. Never uploaded.
Hash Comparison
Paste two hashes to verify they match. Comparison is case-insensitive.
About this tool
This hash generator supports MD5, SHA-1, SHA-256, SHA-384, and SHA-512 — all five outputs generated simultaneously from a single input. SHA variants use the browser's native Web Crypto API for maximum performance; MD5 is implemented via a lightweight JavaScript library since Web Crypto intentionally excludes it.
File hashing works entirely client-side: your file is read from disk, hashed in memory, and the result displayed — no upload, no server, no logs. Large files up to 2 GB are processed in chunks to avoid memory issues.
Common use cases
SHA-256 file checksum
Verify a software download
Drop a downloaded ISO, binary, or zip into the File tab. Paste the official checksum into the Hash Comparison box. A green check confirms the file is bit-for-bit identical to what the author published.
HMAC generator online
Sign API payloads and webhooks
Enable HMAC mode, enter your secret key, and get keyed hashes for request signing or webhook verification. All five HMAC variants in one step — no openssl required.
File integrity checker — no upload
Audit sensitive files privately
Private keys, database dumps, and config files never leave your machine. Unlike server-side tools, there's no upload, no log, and no third party that ever sees your data.
MD5 hash generator
Generate legacy MD5 checksums
Some package managers, CDNs, and legacy APIs still require MD5. Generate MD5 checksums instantly from text or files without installing any desktop software.
How to use this hash generator
Enter text or drop a file
Type or paste any text into the Text tab, or switch to the File tab and drop any file (up to 2 GB). Hashing starts immediately — no button to press.
Choose your algorithm
All five hash algorithms (MD5, SHA-1, SHA-256, SHA-384, SHA-512) compute in parallel. Copy whichever output your use case requires. For security-sensitive work, use SHA-256 or SHA-512.
Verify or compare
Paste any two hashes into the Hash Comparison section. A green checkmark means they match exactly. A mismatch shows a character-level diff so you can spot the difference at a glance.