Hash Generator

How it works

SHA-1, SHA-256, and SHA-512 use the browser's built-in crypto.subtle.digest API. MD5 is computed with a small JavaScript implementation since browsers no longer expose it. All hashes are computed locally — your input never leaves your device.

Frequently asked

Which hash should I use?

For new applications: SHA-256 (general-purpose) or SHA-512 (maximum). MD5 and SHA-1 are broken cryptographically — useful only for non-security checksums (e.g., file integrity in trusted contexts).

Is MD5 still useful?

For verifying file downloads where collision resistance is not critical, yes. For passwords, signatures, or anything an attacker might attack, never.

Why are the hashes always the same length?

Hash functions produce a fixed-size output regardless of input length. SHA-256 always produces 256 bits (64 hex chars); SHA-512 produces 512 bits (128 hex chars).