UtilityBaseDeveloper Tools
Hash Generator
Generate SHA-1, SHA-256, SHA-384, and SHA-512 hashes from any text, live.
Updated July 7, 2026
How to use the hash generator
- 1Type or paste the text to hash — all four digests update live.
- 2Pick the algorithm your use case requires (SHA-256 for most).
- 3Copy the hex digest with the copy button beside it.
- 4To verify integrity, hash the received text and compare digests — any difference means the content changed.
Common uses
- Verifying two pieces of text are identical without eyeballing them
- Generating deterministic IDs or cache keys from content
- Producing a checksum to publish alongside distributed content
- Learning how avalanche effects work — change one letter and watch every hash transform
Frequently asked questions
Which SHA algorithm should I use?
SHA-256 is the modern default — fast, universally supported, and collision-resistant. SHA-512 offers a larger digest for contexts that demand it. SHA-1 is cryptographically broken for collision resistance and should only be used to match legacy systems that require it.
Can a hash be decrypted back to the original text?
No — hashing is one-way by design. The only 'reversal' is guessing inputs and comparing outputs, which is why short or common inputs (like passwords) are crackable via precomputed tables while long random inputs are not.
Is SHA-256 suitable for storing passwords?
No. Bare SHA hashes are fast, which is exactly wrong for passwords — attackers can test billions per second. Password storage needs a deliberately slow, salted algorithm like bcrypt, scrypt, or Argon2.
Why is MD5 not included?
MD5 has been cryptographically broken for decades and browsers' Web Crypto API deliberately doesn't implement it. For any checksum a SHA digest serves better; for legacy MD5 comparisons, use the system tools that produced them.
About this tool
The hash generator computes SHA-1, SHA-256, SHA-384, and SHA-512 digests of any text as you type, using the browser's native Web Crypto API. Hashes are one-way fingerprints: the same input always produces the same output, but the output can't be reversed to recover the input, and changing even one character produces a completely different digest. That makes them the standard tool for verifying file and message integrity, comparing values without storing them, deduplicating content, and generating deterministic identifiers. Everything happens locally — the text you hash never leaves your device.
Like everything on UtilityBase, the hash generator runs entirely in your browser — nothing you enter is uploaded or stored on a server. It's free to use with no account required. Browse more developer tools here.
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