Random SHA256 Hash
Generate random SHA-256 digests (64 hex characters) for test data.
- Runs in your browser
- Free to use
About this tool
Random SHA256 Hash generates valid SHA-256 digests from random input, in bulk, for file-hash fields, blockchain-style IDs, mock certificates and anything else that expects a 64-character hex value. Everything runs in your browser; the SHA256 Generator hashes your own text.
How to use it — quick steps
- 01
Enter the how many
Type or paste the how many in the field above. Nothing is uploaded: the text stays in your browser.
- 02
Adjust the options
Pick the settings that fit your case; the defaults work for most people. They apply on the next run.
- 03
Press "Generate SHA-256 hashes"
Press "Generate SHA-256 hashes" or Ctrl + Enter. The result appears instantly below the form.
Key features of this tool
Cryptographically random
Values come from the browser's secure random generator, never from a predictable seed.
Generated locally
Nothing is sent to our servers; refresh for a new batch of randomly generated data whenever you need more.
Bulk ready
Generate up to a thousand values at once, easily copy or download them all in a click.
Frequently asked questions
Can I use these as API keys or secrets?
They are 256 random bits, so technically yes, but prefer the Password Generator or a proper secret manager for production credentials.
Are these values truly random?
They are produced with the browser's cryptographic random generator (crypto.getRandomValues), so they are unpredictable and suitable for test data, salts and tokens.
Are my files or data uploaded?
No. The tool is plain JavaScript that runs in your browser; the files or data you provide here are never uploaded to our servers.