BLAKE2b File Hash Calculator

Compute the BLAKE2b hash of any file in your browser. 512-bit output, faster than SHA-256. Used in Zcash, Argon2, and WireGuard. Nothing is uploaded — 100% private.

File Input
File
Drag and drop a file here, or click to select. Processed locally — never uploaded.
Output
Settings

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About BLAKE2b File Hash Calculator

BLAKE2b provides fast, secure file hashing at approximately 1 GB/s on modern 64-bit hardware — significantly faster than MD5, SHA-1, and SHA-256. The 512-bit (128 hex character) output provides a 256-bit collision resistance margin. BLAKE2b is widely used in high-throughput applications including the Zcash blockchain, Argon2 password hashing, and the WireGuard VPN protocol.

Verifying Large Files

BLAKE2b is ideal for verifying the integrity of large files (OS images, database dumps, video files) because it processes data roughly 2–3× faster than SHA-256. When speed matters and your toolchain supports BLAKE2b, it is the best choice for file integrity verification. For maximum compatibility with legacy tools and platforms, SHA-256 remains the most widely accepted standard.