Easily generate SHA1 hashes from text with our free online SHA1 generator tool. Simply enter your text and get the calculated SHA1 hash value instantly.
Input
Result
SHA1 produces a 160-bit hash value, which is represented as a 40-character hexadecimal string or an array of 20 bytes.
HEX:  da39a3ee5e6b4b0d3255bfef95601890afd80709
Unsigned Byte Array:  [218, 57, 163, 238, 94, 107, 75, 13, 50, 85, 191, 239, 149, 96, 24, 144, 175, 216, 7, 9]
Signed Byte Array:  [-38, 57, -93, -18, 94, 107, 75, 13, 50, 85, -65, -17, -107, 96, 24, -112, -81, -40, 7, 9]
What is SHA1
In cryptography, SHA-1 (Secure Hash Algorithm 1) is a hash function which takes an input and produces a 160-bit (20-byte) hash value known as a message digest – typically rendered as 40 hexadecimal digits. It was designed by the United States National Security Agency, and is a U.S. Federal Information Processing Standard. The algorithm has been cryptographically broken but is still widely used.