SHA256 Generator
SHA256 Generator computes the SHA-256 hash of any text using your browser's built-in Web Crypto API. The 64-character hexadecimal digest updates live as you type.
SHA-256 is part of the SHA-2 family and is one of the most widely used secure hash functions. Your input is hashed locally and is never transmitted.
SHA-256 digest appears hereHow to use SHA256 Generator
- 1
Enter text
Type or paste the content you want to hash.
- 2
Read the digest
The SHA-256 hash appears immediately below the input.
- 3
Copy the result
Click Copy to put the 64-character digest on your clipboard.
What is SHA-256?
SHA-256 is a member of the SHA-2 family of cryptographic hash functions, producing a 256-bit (32-byte) digest usually shown as 64 hexadecimal characters. It is deterministic, fast to compute, and infeasible to reverse or to find two inputs that share a digest.
It underpins a huge amount of modern infrastructure: TLS certificates, Git commit identifiers, blockchain transactions, software-release checksums and digital signatures all rely on SHA-256 or its relatives.
Common uses for SHA-256
Use SHA-256 to verify that a downloaded file matches its published checksum, to fingerprint content for caching or deduplication, or to generate an integrity hash for an API payload.
While SHA-256 is secure as a general hash, it is not the right tool for storing passwords on its own — password storage needs a slow, salted algorithm such as bcrypt, scrypt or Argon2 to resist brute-force attacks.
Frequently asked questions
- How long is a SHA-256 hash?
- 256 bits, displayed as 64 hexadecimal characters regardless of how long the input is.
- Is the hashing done on a server?
- No. It uses the browser's crypto.subtle API, so your text is hashed locally and never uploaded.
- Can SHA-256 be reversed?
- No. It is a one-way function. Given a digest there is no practical way to recover the original input.
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