Free Online Hash Generator – MD5, SHA-1, SHA-256, SHA-512

Generate cryptographic hashes from text or files instantly in your browser. Supports MD5, SHA-1, SHA-256, and SHA-512. Drag & drop files to verify integrity or compare checksums. 100% private — all hashing runs locally using the Web Crypto API.

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Hash Algorithms
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Frequently Asked Questions

A hash is a fixed-length string generated from input data using a mathematical algorithm. The same input always produces the same hash, but you can't reverse a hash back to the original data.

SHA-256 is the most widely used for general purposes. MD5 and SHA-1 are faster but considered insecure for cryptographic use. SHA-512 provides the highest security.

Yes — drag & drop or select any file to compute its hash. The file is processed entirely in your browser and never uploaded.

Yes — all hashing runs locally in your browser using the Web Crypto API. No data is sent to any server.