Hash Generator

Generate MD5, SHA-1, SHA-256, and SHA-512 hashes for any text input. All computation happens in your browser.

Frequently Asked Questions

Common questions about the Hash Generator tool.

A one-way mathematical function that turns any input into a fixed-length fingerprint. The same input always produces the same hash; changing even one byte produces a completely different hash.

For security: SHA-256 or SHA-512. Avoid MD5 and SHA-1 — both are cryptographically broken. For non-security uses (checksums, deduplication), all of them work but SHA-256 is the modern default.

Not mathematically — hashes are one-way. But if the input space is small (e.g. a 6-digit PIN), an attacker can brute-force every possibility and compare. This is why passwords must be hashed with a slow + salted algorithm like Argon2 or bcrypt, not raw SHA-256.

No. All computation happens in your browser using the WebCrypto API. Your input never leaves your device.