SHA-256 Hash Generator

Generate a SHA-256 hash from any text instantly. It runs locally using your browser's built-in crypto, so nothing you type is ever sent or stored — useful for checksums, integrity checks and learning.

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What is a SHA-256 hash?

SHA-256 turns any input into a fixed 64-character fingerprint. The same input always produces the same hash, but you can't reverse it back to the original — which makes it useful for verifying file integrity, comparing data without exposing it, and storing checksums. It is not encryption (there's no key, and it's one-way), and on its own it's not how you should store passwords — that needs salted, slow hashing like bcrypt.

Frequently asked questions

Is SHA-256 encryption?

No. It's a one-way hash — you can't reverse it to the original. Encryption is reversible with a key; hashing is a fixed fingerprint for verification.

Is it safe to hash text here?

Yes — it runs entirely in your browser using the Web Crypto API. Nothing is sent to a server or stored.

Can I use SHA-256 to store passwords?

Not on its own — it's too fast for that. Use a slow, salted algorithm like bcrypt or Argon2 for passwords. SHA-256 is for checksums and integrity.

This tool is free and runs entirely in your browser. The link above is an affiliate link: we may earn a commission if you sign up, at no extra cost to you, and it never changes our honest take.