What is SHA-1 used for?
It has been used for integrity checks and legacy systems, but should not be used for modern security design.
SHA1 Hash Generator
Generate SHA-1 hashes for text and files instantly, right in your browser.
Important note about SHA-1
SHA-1 is a legacy hash function and is no longer recommended for security-critical applications. Use SHA-256 or stronger algorithms for modern cryptographic needs.
FAQ
Does this tool upload my files?
No. All hashing runs locally in your browser using the Web Crypto API.
Can I use this for passwords?
No. SHA-1 is outdated for password storage. Use modern password hashing like Argon2, bcrypt, or scrypt.