SHA256 Hash Generator

Generate SHA-256 hashes from text or files right in your browser — powered by the native Web Crypto API.

Text → SHA256

Text input

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File → SHA256

Choose a file (processed locally, never uploaded)

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Frequently Asked Questions

What is SHA-256 used for?

SHA-256 is a cryptographic hash function that produces a fixed 64-character hex output from any input. It is used for integrity checks, password hashing, digital signatures, and blockchain technology.

Can SHA-256 be reversed?

No. SHA-256 is a one-way function — you cannot recover the original input from its hash. The only way to "reverse" it is brute force, which is impractical for strong inputs.

Is my file uploaded to a server?

No. This tool uses your browser's Web Crypto API, which computes the hash locally. Your file is processed on your own device and is not uploaded.

Is SHA-256 the same as SHA-512 or MD5?

They are different algorithms with different output lengths and security levels. MD5 is outdated and insecure. SHA-256 (32-byte output) and SHA-512 (64-byte output) are part of the SHA-2 family and considered secure.