SHA-256 Hash Generator
Generate the SHA-256 hash of any text in your browser. 256-bit digest, 64 hex characters, nothing leaves your device.
Independently verified for accuracy
Calculator by Toolsloft ↗This tool produces the SHA-256 hash of any text you enter. SHA-256 is part of the SHA-2 family and returns a 256-bit digest written as 64 hexadecimal characters. It is the hash behind TLS certificates, blockchain addresses, and file checksums. Everything is computed in your browser.
How this is calculated
The result follows SHA-256 from the FIPS 180-4 standard: your text becomes UTF-8 bytes, gets padded, and is processed in 512-bit blocks through 64 compression rounds. The JavaScript is checked against Python's hashlib on every build, so it matches any compliant SHA-256 implementation to the character.
How to use
- Paste or type your text into the input box.
- The SHA-256 hash appears instantly in the output box.
- Click Copy to grab the 64-character result.
Examples
- Text:
abc → ba7816bf8f01cfea414140de5dae2223b00361a396177a9cb410ff61f20015ad
FAQ
- Is SHA-256 secure?
- Yes. SHA-256 is a current, widely trusted cryptographic hash with no practical collision attacks, which is why it underpins TLS, code signing, and cryptocurrency. Note that hashing is one-way; it is not encryption, so a hash cannot be turned back into the original text.
- How many characters is a SHA-256 hash?
- Exactly 64 hexadecimal characters. SHA-256 always outputs 256 bits, which is 64 hex digits, whatever the input length.
- Can I recover the original text from the hash?
- No. SHA-256 is a one-way function. You can confirm that a piece of text produces a given hash, but there is no way to reverse the hash back into the text.