md5 - online function

md5 ( string $str [, bool $raw_output = FALSE ] ) : string

Calculate the md5 hash of a string and returns the hash as a 32-character hexadecimal number. Original PHP function can return raw binary format if $raw_output is set to true. Remember that is not recommended to use md5 to store passwords anymore. Other uses of this function may also be dangerous, due to the fact that the function is prone to collisions.

This tool it's a javascript function so hash is calculated by your browser and it's not sent across internet .