Generate MD5, SHA-1, SHA-256, and SHA-512 hashes instantly. Uses the Web Crypto API — inputs are not sent to our servers.
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Quick answers to common questions
A hash function takes any input and produces a fixed-length output (the digest). The same input always produces the same hash, but it's computationally infeasible to reverse.
MD5 is fast but cryptographically broken — collisions can be generated. SHA-256 is considered secure. Never use MD5 for security. Use it only for checksums where collision resistance isn't needed.
No. Hash functions are one-way. You cannot reverse a hash. Attackers can try rainbow table attacks, which is why passwords must use salted bcrypt/Argon2, not plain SHA.
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