Free developer tool
Calculate CRC32, MD5, SHA-1, SHA-2, or SHA-3 checksums locally as you type with no uploads or stored input.
Your result will appear here.
About this tool
Generate hexadecimal checksums and digests for UTF-8 text with common compatibility and modern algorithms.
Bundled checksum and hash implementations convert text to UTF-8 bytes and calculate the selected output locally after each edit.
Common uses
Scope
Worked example
Use the prefilled value in the tool above or paste a similar value of your own.
Hash this text locally
A lowercase hexadecimal digest whose length depends on the selected algorithm
Quick answers
No. Hashing is one-way, although weak or predictable inputs may still be guessed and compared.
Not by itself. Password storage should use a deliberately slow, salted password hashing algorithm such as Argon2, scrypt, or bcrypt.
They remain common for legacy checksums, but should not be selected where collision resistance matters.