Is any of my data uploaded to a server?

No. Every hash is computed in your browser tab using the Web Crypto API and local JavaScript implementations for MD5 and CRC32 — nothing is ever transmitted.

Which algorithm should I use to verify a file download?

SHA-256 is the modern standard for checksums. Use whichever algorithm the publisher listed alongside the download link.

Can I hash a password the way a real login system would?

Enable PBKDF2 mode and set a realistic iteration count (100,000 or more) — that mirrors how many systems store passwords, though production systems typically use bcrypt or Argon2 instead.

What is HMAC mode for?

HMAC combines a secret key with your message so you can verify both the content and the sender — commonly used for signing API requests and webhooks.

ToolMano

Hash generator

Compute MD5, SHA-1, SHA-256, SHA-512 and CRC32 hashes.

No uploadNo signupWorks offline

Input source

Algorithm

Result (SHA-256)

—

Input bytes

Digest bits

History

Quick presets

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About hash generator

Hash generator computes MD5, CRC32, SHA-1, SHA-256, SHA-384 and SHA-512 digests from text or a file, entirely inside your browser using the Web Crypto API and a couple of pure-JavaScript algorithms for the formats browsers don't ship natively.

Beyond a plain digest, it supports HMAC signing, PBKDF2 key derivation, salting, per-line batch hashing and hashing every algorithm at once for side-by-side comparison — useful for verifying downloads, checking password hashing schemes, or debugging checksums.

Because hashing runs locally, nothing you paste or upload — including file contents or a secret HMAC key — ever leaves your device.

How to use Hash generator

1Choose text or file input, and pick an algorithm.
2Optionally enable HMAC or PBKDF2 mode and provide a key or salt.
3Paste an expected hash to check for a match automatically.
4Copy the digest or download it as a text file.

What it does

MD5, CRC32, SHA-1, SHA-256, SHA-384 and SHA-512
HMAC signing and PBKDF2 key derivation
Salting with prefix or suffix placement
Hex, Base64, Base64URL, byte-array and decimal output
Compare all algorithms at once side-by-side
Line-by-line batch hashing for word lists
Streamed file hashing with a progress bar
Built-in expected-hash comparison

Frequently asked questions

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