Fast hashing · MurmurHash3
MurmurHash3 File Generator
Upload files and derive MurmurHash3 checksums as 32-bit x86 or 128-bit x86/x64 outputs—no bytes leave the page. Hashing text? Switch to the MurmurHash text tool →
File MurmurHash3
Hash uploaded files with MurmurHash3 as 32-bit x86 or 128-bit x86/x64 digests. Switch between variants to reproduce SMHasher vectors for your platform, then dial in seeds to mirror production—all without leaving the browser.
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Returns the classic x86_32 result as an unsigned decimal.
Select a file to generate a MurmurHash3 digest.
Provide a 32-bit seed (decimal or hex). Leave blank to use zero.
Select a file and enter an expected hash to compare.
MurmurHash for files
MurmurHash3 spreads entropy evenly with minimal CPU overhead, making it ideal for deduplicating large sets of logs, telemetry, or other bulk data.
The current version, completed April 3, 2011, yields either 32-bit or 128-bit digests. When you select 128 bits, the x86 and x64 algorithms intentionally diverge because each is tuned for its respective platform. MurmurHash3 shipped alongside SMHasher, the reference-quality test suite for measuring avalanche behaviour.
Seeds ensure compatibility with other systems—use decimal or hexadecimal values and keep both the seed and variant identical across environments to reproduce results.
For cryptographic integrity checks, pair MurmurHash with SHA or BLAKE family algorithms.