Generate and verify cryptographic hashes (MD5, SHA-1, SHA-256, SHA3, BLAKE2), hash files, create HMACs and password hashes (bcrypt, Argon2, PBKDF2, scrypt). Compare hashes, check security strength, and export results. All processing runs in your browser — no data leaves your device.
Type above to see hashes.
A hash generator (or cryptographic hash calculator) turns any input—text or file—into a fixed-length string called a hash or checksum. The same input always produces the same hash; a tiny change in the input produces a completely different hash. Hash generators are used for integrity checks, digital signatures, password storage, and verifying downloads.
Different algorithms offer different security and output sizes:
A file hash checker computes the hash of an entire file. Use it to verify downloads: compare the hash you get with the one published by the provider (e.g. SHA-256 on a software release page). If they match, the file is unchanged. This tool supports drag-and-drop and any file size; hashes are computed in your browser so the file never leaves your device.
The hash verification mode lets you paste content and an expected hash (e.g. SHA-256). The tool hashes your input and compares it to the expected value in constant time, telling you whether the content matches—ideal for checking installers, firmware, or config files against published checksums.
HMAC (Hash-based Message Authentication Code) produces a keyed hash: only someone with the same secret key can reproduce the same value. Use an HMAC generator for API request signing, webhook verification, or integrity+authenticity together. This tool supports HMAC with MD5, SHA-1, SHA-256, SHA3, and BLAKE2.
Storing passwords requires password hashing, not plain cryptographic hashes. This tool can generate bcrypt, Argon2, PBKDF2, and scrypt hashes. These algorithms are slow by design to resist brute force. Use Argon2 or bcrypt for new applications; add a random salt (the tool includes a salt generator) to prevent rainbow table attacks.
In practice, checksum and hash are often used interchangeably. Technically, a checksum can be a simple sum (e.g. for error detection); a cryptographic hash is one-way and collision-resistant. When you see “SHA-256 checksum” on a download page, it means the SHA-256 hash of the file—use this tool to compute it and verify.
This hash generator runs entirely in your browser. Your input and files are never sent to our servers; hashes are computed locally. No data is stored. Use it for sensitive content, passwords (when generating hashes), or large files without privacy concerns.
Keywords: hash generator, md5 generator, sha256 generator, file hash checker, hash verification tool, HMAC generator, checksum calculator, password hash generator, bcrypt, Argon2, SHA3, BLAKE2.