MD5 / SHA Hash

Compute cryptographic digests for strings. Useful for checksums and testing.

Hex
Base64
GuideEncryption, Hashing and Defensive Hash Checks Explained

Understand reversible encryption, one-way hashes, checksums, password hashing, and limited wordlist comparisons.

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Basic Hash Cracker Text Encrypt/Decrypt Base64 Encode/Decode Password Generator

Frequently asked questions

What is a cryptographic hash?
A hash function converts input into a fixed-length digest. Small input changes normally produce a very different digest.
Can a hash be decrypted?
A hash is not encryption and has no decryption key. Weak or common inputs may still be guessed by comparing computed hashes.
Should MD5 or SHA-1 protect passwords?
No. Password storage should use a purpose-built, salted password hashing algorithm such as Argon2, bcrypt, scrypt, or PBKDF2.
Why do the hexadecimal and Base64 outputs differ?
They are two encodings of the same digest bytes. Hex is longer and widely used for checksums; Base64 is more compact.