SHA-256 generator
Generate SHA-256, SHA-224, SHA-384 and SHA-512 hashes of a text or file.
How to useGenerate SHA-256.
Available in: 
SHA-256 generator: what it is for
Calculate the SHA-256 of any text or file, together with the other SHA-2 hashes (SHA-224, SHA-384 and SHA-512) and the legacy SHA-1. Results come in hex, uppercase or Base64, with the size in bits and a colored fingerprint to compare results.
Everything is calculated in your browser: the text and files never leave your computer.
How to use
- Type the text or choose a file.
- See the SHA-2 family hashes.
- Copy what you need.
When to use it
- Verify the integrity of downloads and ISOs.
- Test API and webhook signatures.
- Study cryptography and blockchain.
Frequently asked questions
What is SHA-256 used for?
It is the most widely used hash today: it verifies downloads, signs digital certificates, protects API data (HMAC) and is the basis of Bitcoin. It always produces 64 hex characters (256 bits).
What is the difference between SHA-224, SHA-256, SHA-384 and SHA-512?
They all belong to the SHA-2 family. Only the output size changes: 224, 256, 384 or 512 bits. Bigger is harder to collide, but SHA-256 is enough for almost everything.
Does the text leave my device?
No. The hash is calculated in your browser; nothing is sent to a server.
Is it really free?
Yes, 100% free. No sign-up, no subscription and no usage limits. All Tools123 are free.