SHA-1 Hash Function
SHA-1 produces a 160-bit hash value rendered as a 40-character hexadecimal string. While still used in some legacy systems, it has been deprecated for security purposes in favor of SHA-256.
SHA-1 Hash Generator
Generate SHA-1 hashes from text
Frequently Asked Questions
What is SHA-1?
SHA-1 (Secure Hash Algorithm 1) produces a 160-bit (40-character hexadecimal) hash. It was designed by the NSA and published by NIST in 1995.
Is SHA-1 secure?
SHA-1 is considered cryptographically weak since 2017 when Google demonstrated a practical collision attack (SHAttered). Use SHA-256 or higher for security-sensitive applications.
Is my data safe?
Yes. All hashing happens in your browser.