Generate SHA-256, SHA-512 or SHA-1 hashes from any text. Uses the native Web Crypto API — your data never leaves the browser.
SHA (Secure Hash Algorithm) is a family of cryptographic hash functions published by NIST. SHA-256 produces a 256-bit (64-character hex) hash, SHA-512 produces a 512-bit (128-character hex) hash, and SHA-1 produces a 160-bit (40-character hex) hash. These algorithms are used for data integrity verification, digital signatures, SSL certificates, blockchain, and password hashing. This tool uses your browser's native Web Crypto API (crypto.subtle.digest) for hardware-accelerated hashing that is both fast and secure. SHA-256 is the gold standard for most security applications — it is used in Bitcoin mining, TLS certificates, and code signing. SHA-512 offers even stronger security for sensitive applications. SHA-1, while deprecated for security use, is still used in Git commit hashes and legacy systems.
Choose SHA-256 (default, most common), SHA-512 (strongest), or SHA-1 (legacy compatibility). The hash regenerates instantly when you switch.
Type or paste the text you want to hash. The hash output updates in real time as you modify the input.
Click Copy to grab the hex-encoded hash string. The character count is shown so you can verify the algorithm output length.
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