Free online SHA-256 hash generator
Create a SHA-256 hex digest from any string, instantly and privately on your device. Handy for checksums, cache keys, and quick integrity checks - without sending text to a remote hasher.
What you can do
Hex digest
Hash any UTF-8 string to a 64-character lowercase SHA-256 hex digest - the format most checksums and APIs expect.
Instant & local
Uses the Web Crypto API in your browser. No upload, no account, and nothing stored on a server.
Integrity checks
Compare digests for cache keys, content addressing, or quick file/string fingerprints during development.
Hashing vs encryption
- Hashing (SHA-256)
- One-way fingerprint of input. Same input always yields the same digest; you cannot reverse the digest to recover the original text.
- Encryption
- Designed to be reversed with a key. Use encryption to protect confidentiality; use hashing for integrity and fingerprints.
- Passwords
- Do not store user passwords with plain SHA-256 alone. Prefer a password hashing scheme (argon2, bcrypt, scrypt) on the server. SHA-256 vs MD5.
SHA-256 example
Input
jigglify
SHA-256 (hex)
e7e0c6cf7b56d4b8b61f01b7f7f6642095e943fbe2f179733365c60b2cd95d2d
Whitespace and case matter - even a trailing newline changes the digest. Hash exactly the bytes you intend to verify.
How to use this SHA-256 tool
- Paste or type the input text, or click Sample for a quick example.
- Click the arrow between the panels to hash.
- Copy the lowercase hex digest from the output.
- Use Clear when you are finished - hashing stays on your device.
Frequently asked questions
Learn more about SHA-256
Related tools: Password generator, JWT decoder, UUID generator.
Why generate SHA-256 locally?
SHA-256 is widely used for content addressing and integrity verification. Generating digests locally keeps sensitive strings - API keys, emails, config snippets - off remote hashing services while you compare checksums or build cache keys.