Hash Generator

Generate SHA-256, SHA-1 and CRC-32 hashes of any text, entirely in your browser.

Enter values

Result

SHA-256

b94d27b9934d3e08a52e52d7da7dabfac484efe37a5380ee9088f7ace2efcde9

Hashing is one-way — the same input always gives the same hash, but the hash cannot be turned back into the input.

SHA-1: 2aae6c35c94fcfb415dbe95f408b9ce91ee846ed
CRC-32: 0d4a1185
Input size: 11 B
SHA-256 length: 64 hex characters (256 bits)
Short hash (first 8): b94d27b9

SHA-1 and CRC-32 are included for checksums and legacy comparison — neither is suitable for security. Never hash passwords without a slow algorithm and a salt.

About the Hash Generator

Generate SHA-256, SHA-1 and CRC-32 hashes of any text, entirely in your browser.

Also known as: sha256 generator, checksum calculator, sha1 hash, crc32 calculator, text hash.

How to use this calculator

Enter text to hash, output case.
The result updates instantly as you type — press Calculate (or Enter) at any time.
Review the breakdown shown under the main result.
Use Copy result or Share to save the answer or send a link with your inputs.

Formula

SHA-256 as specified in FIPS 180-4

Worked example

Using the values pre-filled in the calculator above:

Text to hash: hello world
Output case: Lowercase

the calculator returns:

SHA-256: b94d27b9934d3e08a52e52d7da7dabfac484efe37a5380ee9088f7ace2efcde9
SHA-1: 2aae6c35c94fcfb415dbe95f408b9ce91ee846ed
CRC-32: 0d4a1185
Input size: 11 B

Frequently asked questions

Is my text sent anywhere?

No — the hash is computed in your browser with a pure JavaScript implementation.

Can I reverse a hash?

Not by computation. Short or common inputs can be found in lookup tables, which is exactly why passwords need salting.