Hash Generator (SHA-256, SHA-512, SHA-1)

SHA hashes of any text, computed locally with Web Crypto.

Quick answer: Generate secure SHA-256, SHA-512, and SHA-1 hashes online. Compute cryptographic text hashes securely in your browser without data uploads.

Text to hash

hashed locally with Web Crypto — input never uploaded

Compute SHA-256, SHA-512, or SHA-1 digests of any text — entirely in your browser using the native Web Crypto API, so the input never leaves your machine.

How it works

Select the hashing algorithm you need (SHA-256 is recommended).
Type or paste your text into the input field.
The Javascript Web Crypto API instantly outputs the immutable cryptographic digest.

Frequently asked questions

Which hashing algorithm should I default to?

SHA-256 is the standard modern default. SHA-1 is cryptographically broken and is included here solely for verifying legacy system checksums.

Why is MD5 missing from the options?

Modern browsers intentionally omit MD5 from the Web Crypto API because it is severely broken and insecure. Use SHA-256 instead.

Can a generated hash be reversed back to text?

No. Cryptographic hashes are mathematically one-way by design. The only way to "crack" a hash is by guessing inputs and comparing the outputs.

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