Hash Generator

Cryptographic hash functions convert any input text into a fixed-length fingerprint called a digest. This tool generates MD5, SHA-1, SHA-256, and SHA-512 hashes simultaneously in real time. Type or paste your text in the input field — all four hash values update instantly with every keystroke, so there is no need to click a button. This makes it easy to see how even a tiny change in the input produces a completely different hash, demonstrating the avalanche effect that makes hashes useful for data integrity verification. Toggle Uppercase to switch between lowercase hex (the default) and uppercase hex output — both represent identical hash values and are interchangeable. Use the Copy icon beside each hash to copy it to your clipboard with a single click. For verification workflows, enable Compare Mode: a second input field appears where you can paste a known hash value. The tool immediately highlights green if your input text produces a matching hash, or red if it does not match. This is extremely useful for verifying software download checksums, comparing database records, checking data integrity after a file transfer, and testing whether two text strings are identical without revealing the content. MD5 and SHA-1 are computed using the crypto-js library; SHA-256 and SHA-512 use the browser's built-in Web Crypto API. None of your text is ever sent to any server.