Hash Generator
Paste any text and get its SHA-256, SHA-1 or SHA-512 hash instantly. Everything runs on your device.
Free online hash generator
A cryptographic hash turns any text into a fixed-length string of characters that acts like a digital fingerprint. This tool lets you generate SHA-256, SHA-1 and SHA-512 hashes from passwords, messages, file contents or any other text — handy for verifying data integrity, generating checksums, comparing values and testing applications that rely on hashing.
Your text is private
All hashing happens directly in your browser using the built-in Web Crypto API. Nothing you type is ever uploaded to a server or stored anywhere — close the tab and it's gone. That makes it safe to hash sensitive strings without them leaving your device.
Frequently asked questions
Which hash algorithm should I use?
SHA-256 is the modern default and a great all-round choice. SHA-512 produces a longer digest and is common on 64-bit systems, while SHA-1 is older and now considered insecure for security purposes — use it only for compatibility with legacy systems.
Can I reverse a hash back to the original text?
No. Cryptographic hashes are one-way functions, so there is no way to convert a hash back into the text that produced it. The same input always yields the same hash, which is why hashes are used to verify data.