The SHA256 Hash File Checksum generator tool allows you to instantly generate a SHA256 (32-byte) hash of any string or hex input value, which is then returned as a hexadecimal number of 64 digits.
SHA-256 is a message-digest algorithm. It is used to compute a hash value in cryptography. A hash function takes a block of data and returns a fixed-size bit string (hash value). The data used by hash functions is referred to as a "message", while the computed hash value is referred to as the "message digest".