Algorithm reference

SHA-256 hash calculator

SHA-256 is part of the widely deployed SHA-2 family.

Modern 256-bit output 64 hex characters

Digest calculator

Text to hash

Private result

Never enter a real account password or any other secret. Submitted text is processed by the server, but never placed in the URL, logs, analytics, or ads.

Practical guidance

About SHA-256

File integrity, signatures, content addressing, and protocol digests.

Collision resistance

No practical collision is publicly known for the full algorithm.

Examples

Use SHA-256

Command line

printf %s "hello" | sha256sum

Go

sum := sha256.Sum256([]byte("hello")); fmt.Printf("%x\n", sum)

Python

hashlib.sha256(b"hello").hexdigest()

JavaScript / browser

crypto.subtle.digest("SHA-256", new TextEncoder().encode("hello"))

Common password examplesPublic deterministic compatibility pages