Toolgeist › Security

File Hash Calculator — MD5, SHA-1, SHA-256 Checksum

Drop in a file to compute its MD5, SHA-1, SHA-256 and SHA-512 checksums. Hashing runs entirely in your browser using the Web Crypto API, so even large files never leave your device — ideal for verifying a download against a published checksum.

How to use File Hash

1. Select or drag in the file.
2. Wait for the hashes to compute locally.
3. Compare against the published checksum.
4. Copy any hash you need.

Frequently asked questions

Which hash should I use to verify a download?

SHA-256 is the current standard. MD5 and SHA-1 are still common for legacy checksums but are cryptographically broken.

Is my file uploaded anywhere?

No. Hashing uses your browser's built-in Web Crypto API and the file never leaves your device.

Why does my hash not match?

Usually an incomplete or corrupted download. Re-download and check again; a persistent mismatch means you should not trust the file.

Related Security tools

• XOR Cipher
• TOTP Generator
• IPv6 Validator
• Env Generator
• ROT13 Cipher
• RSA Key Gen

Also searched for: md5 checksum online · sha256 file hash · verify download checksum

Browse all 738 free tools on Toolgeist →