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This SHA1 Generator tool allows you to generate SHA1 and SHA256 hash values from any text. SHA (Secure Hash Algorithm) is a cryptographic hash function that produces a fixed-size output (hash value) from an input. SHA1 generates a 160-bit (20-byte) hash value, while SHA256 generates a 256-bit (32-byte) hash value. These hash values are commonly used for data integrity verification, password storage, and digital signatures. Our online SHA1 SHA256 generator is completely free to use and works directly in your browser without sending your data to our servers.