SHA Hash Generator

What is a SHA hash?

SHA (Secure Hash Algorithm) is a one-way cryptographic function that turns data of any length into a fixed-length digest. If one word changes the digest changes completely; the same input always gives the same output. This makes it essential for verifying file downloads, storing password hashes and validating signatures.

SHA-1, SHA-256 or SHA-512?

SHA-1 produces a 160-bit digest and has been considered insecure against collisions since 2005; use it only for legacy compatibility. SHA-256 gives a 32-byte (64 hex character) digest and SHA-512 a 64-byte (128 hex character) one. SHA-256 is the standard for new projects; choose SHA-512 when maximum strength matters.

Is my data safe?

Yes. Hashing runs in your browser's crypto library entirely on your device; your text is never sent anywhere. Private keys, passwords and sensitive data can be hashed safely here.

FAQ

• Can I reverse a hash to the original text? No — SHA is one-way.
• Does the same text give different hashes? No — SHA is deterministic.
• Which algorithm should I pick? SHA-256 is sufficient and secure for most cases.