Hash Generator
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes for any text, all at once.
MD5 and SHA-1 are broken for security
Both algorithms have known collision vulnerabilities, meaning two different inputs can be crafted to produce the same hash. Neither should be used for passwords or anything security-critical, though they remain fine for basic checksums.
SHA-256 and SHA-512 are the modern standard
Part of the SHA-2 family, both remain cryptographically secure today. SHA-512 produces a longer hash and can be faster on 64-bit hardware; SHA-256 is more common in web contexts.
Common Mistakes to Avoid
Using MD5 or SHA-1 for passwords
Solution:
Neither is secure against modern attacks. Passwords should use a purpose-built algorithm like bcrypt or Argon2, not a general-purpose hash function.
Expecting a hash to be reversible
Solution:
Hashing is one-way by design — you cannot recover the original input from its hash. If you need to recover data, you need encryption, not hashing.
Frequently Asked Questions
For anything security-relevant, use SHA-256 or SHA-512. MD5 and SHA-1 remain fine only for basic file-integrity checksums.
No — all four hashes are computed entirely in your browser.
MD5 and SHA-1 are broken for security
Both algorithms have known collision vulnerabilities, meaning two different inputs can be crafted to produce the same hash. Neither should be used for passwords or anything security-critical, though they remain fine for basic checksums.
SHA-256 and SHA-512 are the modern standard
Part of the SHA-2 family, both remain cryptographically secure today. SHA-512 produces a longer hash and can be faster on 64-bit hardware; SHA-256 is more common in web contexts.