SHA-256 Hash Generator
Compute SHA-256 hashes locally in your browser — no data leaves your device.
Generator
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About SHA-256
SHA-256 (Secure Hash Algorithm 256-bit) is a member of the SHA-2 family, designed by the NSA and published by NIST in 2001. It produces a 256-bit (32-byte) digest using a Merkle–Damgård construction with a Davies–Meyer compression function. SHA-256 is the backbone of Bitcoin mining, TLS certificates, code signing, and countless modern security protocols. It remains cryptographically strong with no known practical collision attacks.
Output Size
256 bits (64 hex)
Published
2001
Designer
NSA / NIST
Status
Secure
No known collisions
Pre-image resistant
NIST approved
Bitcoin PoW