Hash Generator Online — SHA-256, SHA-1, SHA-512
Generate SHA-1, SHA-256, SHA-384, and SHA-512 hashes from any text. All hashing happens in your browser.
What is a Hash?
A hash function takes input data of any size and produces a fixed-size string of characters (the hash). Hashes are one-way — you cannot reverse them to get the original text. They are used for data integrity, password storage, and digital signatures.
Which algorithm should I use?
SHA-256 is the most commonly used and recommended for most purposes. SHA-1 is considered weak and should not be used for security. SHA-512 provides the highest security but produces longer hashes.
Is this tool secure?
Yes. All hashing happens locally in your browser using the Web Crypto API. No data is sent to any server.