Hash Generator Online

Generate SHA-256 and SHA-512 cryptographic hashes from any text instantly. Free hash generator using the Web Crypto API. Nothing leaves your browser.

SHA-256 SHA-512 Web Crypto API Nothing Sent Free

Input text to hash

SHA-256

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SHA-512

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Quick reference

What it is

Creates a fixed-length cryptographic fingerprint of any text using SHA-256 or SHA-512 — the same standard used in SSL certificates and Bitcoin.

How to use it

Type or paste your text into the input
Click Generate Hashes
Both SHA-256 and SHA-512 results appear instantly
Click Copy next to either hash to copy it

When you need this

Verifying a file hasn't been tampered with
Creating a checksum for data integrity
Hashing passwords before storing (use bcrypt in production)
Generating a unique fingerprint for any piece of data

Good to know

The same input always produces the exact same hash
Even one character change produces a completely different hash
Hashing is one-way — you cannot reverse a hash to get the original
SHA-256 = 64 hex chars, SHA-512 = 128 hex chars

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