SHA-256 Generator
Calculate the SHA-256 hash of text or a file — for checksums, integrity checks and API signatures. Optionally compute an HMAC-SHA256 with a secret key.
This tool runs entirely in your browser.
Loading tool…
How to use the SHA-256 Generator
- 1Type text or choose a file.
- 2Copy the 64-character SHA-256 hash.
- 3Paste a published checksum to compare automatically.
What is the SHA-256 Generator?
SHA-256 produces a 256-bit (64 hex character) digest. It is used in TLS certificates, Git, Bitcoin and software download checksums.
Frequently asked questions
Can a SHA-256 hash be reversed?
No. Hashes are one-way; short or common inputs can only be found by guessing.
Is the SHA-256 Generator free and private?
Yes. The SHA-256 Generator is free, needs no account, and runs entirely in your browser. What you type is never sent to a server or stored.
Related tools
All security & generators →- SHA-512 GeneratorGenerate SHA-512 hashes of text or files.
- Hash GeneratorGenerate MD5, SHA-1, SHA-256 and SHA-512 hashes.
- Base64 EncoderEncode text to Base64.
- JWT DecoderDecode JWT tokens directly in your browser.
- Password GeneratorGenerate strong, random passwords.
- Passphrase GeneratorGenerate memorable multi-word passphrases.