SHA-256 Hash Generator
Generate SHA-256 hashes from text input
SHA-256 Hash Generator is a free online tool from BrowserUtils that generate sha-256 hashes from text input. It runs entirely in your browser — your data never leaves your device. No account required.
Output Format:
How to use SHA-256 Hash Generator
- 1 Paste or type your input into the editor above.
- 2 The tool processes your data instantly — right in your browser, with nothing sent to a server.
- 3 Copy the result with one click or continue editing your input.
About SHA-256 Hash Generator
Free online SHA-256 hash generator. Compute secure SHA-256 message digests using the Web Crypto API for maximum performance. This tool runs entirely in your browser — your data is never sent to a server. Just paste your input, get instant results, and copy with one click. No sign-up or installation required.
SHA-256 Hash Generator specs
- Runtime
- 100% client-side (browser)
- Built on
- Web Crypto API (SubtleCrypto) for hashing and crypto.getRandomValues for secure randomness
- Cost
- Free — no account, no rate limits, no usage caps
- Browser support
- Chrome 90+, Firefox 88+, Safari 14+, Edge 90+
- Part of
- 299 developer tools on BrowserUtils (100% client-side)
Questions
What is SHA-256?
SHA-256 is a cryptographic hash function that produces a 256-bit (32-byte) hash value. It is part of the SHA-2 family and is widely used in security applications, blockchain, and data integrity verification.
Is SHA-256 secure?
Yes. SHA-256 is currently considered secure and is used in TLS certificates, Bitcoin, and many other security-critical systems.
How is SHA-256 used in Bitcoin?
Bitcoin uses double SHA-256 (hashing the output again) for block headers and transaction IDs. Miners repeatedly hash block headers with different nonces to find a hash below the target difficulty.
What does a SHA-256 hash look like?
A SHA-256 hash is a 64-character hexadecimal string, for example: e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855 (the hash of an empty string).
Does this SHA-256 tool work offline?
Yes, the hash is computed in your browser using the Web Crypto API. No data leaves your device, and the tool works without an internet connection.
Can I use SHA-256 for password hashing?
A plain SHA-256 hash is too fast for password hashing, making it vulnerable to brute-force attacks. Use a dedicated password hashing algorithm like bcrypt, scrypt, or argon2 that is intentionally slow.
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