Are my files uploaded to create the hash?

No. The hash is calculated on your device in your browser, so the file never leaves it.

How do I check that a download is genuine?

Choose the file, then paste the hash published by the download’s author into the compare box. If the hashes match, you will see a confirmation. Prefer SHA-256 or stronger.

Which algorithm should I use?

SHA-256 or SHA-512 for anything that matters. MD5 and SHA-1 are older and can be forged, so use them only for simple checksums when a site asks for them.

Hash Generator

Create MD5, SHA-1, SHA-256, SHA-384 and SHA-512 hashes of text or a file, and compare them with a hash you have.

Your files never leave your device

Type text or choose a file. The hashes appear below. Paste a hash you already have to check that it matches.

About this tool

Hash Generator creates MD5, SHA-1, SHA-256, SHA-384 and SHA-512 hashes of any text or file, and lets you compare a hash you already have to see if a download is genuine. It runs in your browser, so your files are never uploaded, and it is free with no sign-up.

Good to know: Files up to 500 MB. MD5 and SHA-1 are older algorithms: use them for checksums only, not for security.

Your files are processed entirely in your browser — nothing is ever uploaded to any server. Verify it yourself

Frequently asked questions

Are my files uploaded to create the hash?: No. The hash is calculated on your device in your browser, so the file never leaves it.
How do I check that a download is genuine?: Choose the file, then paste the hash published by the download’s author into the compare box. If the hashes match, you will see a confirmation. Prefer SHA-256 or stronger.
Which algorithm should I use?: SHA-256 or SHA-512 for anything that matters. MD5 and SHA-1 are older and can be forged, so use them only for simple checksums when a site asks for them.

File Checksum Checker

Check that a downloaded file is genuine: paste the published checksum and compare it with your file.

Text Encrypt & Decrypt

Encrypt a message with a password using AES-256, and decrypt it again later. Everything happens in your browser.

Base64 Encode & Decode

Convert text or a file to Base64, or decode Base64 back to text, with an optional URL-safe format.

Password Generator

Create strong random passwords with the length and characters you choose, using your device’s secure random generator.