xxHash32 is an extremely fast non-cryptographic hash by Yann Collet (2012). It produces 32-bit hashes at speeds approaching RAM bandwidth — the CPU spends more time waiting for data than computing the hash.

Why is xxHash32 so fast?

It uses SIMD-friendly operations, large-chunk processing, and avoids expensive operations like multiplication or modulo. It operates near memory bandwidth limits.

Which databases use xxHash32?

PostgreSQL uses it for hash join operations. Apache Cassandra for partition key hashing. Redis for hash table lookups. ClickHouse and other analytical databases also employ xxHash for indexing.

xxHash32 is generally faster with better hash distribution (fewer collisions for hash tables). CRC32 has hardware support (Intel CRC32 instruction) but xxHash32 often outperforms in software.

Can xxHash32 be used for security?

No. It is explicitly non-cryptographic with zero collision or preimage resistance. Designed purely for hash table speed. For security, use SHA-256, BLAKE2, or SHA-3.

Tools

xxHash32|8 hex chars

Input

Output

Hash result will appear here...

0 chars|0 bytes

xxHash32 Hash Generator — Ultra-Fast Database Index Hash

Extremely fast 32-bit non-cryptographic hash approaching RAM bandwidth limits. Used for hash indexing in PostgreSQL, Apache Cassandra, and other high-throughput databases.

Features

✓Compute xxHash32 hashes online — ultra-fast 32-bit non-cryptographic hash for databases
✓Real-time 32-bit hash computation with 8 hex character output
✓One-click copy, download as .txt, and uppercase/lowercase toggle
✓Used by PostgreSQL, Apache Cassandra, and Redis for hash-based indexing
✓Hash verification against known xxHash32 checksums
✓100% browser-based — speed approaching RAM bandwidth limits

How to Use

1Type or paste your text into the input box above.
2Your hash digest appears instantly — no page reload needed.
3Toggle UPPERCASE / lowercase to change the hex output format.
4Click the copy icon to copy the hash to clipboard, or use Download to save as .txt.
5Paste an expected hash into the Verify field to check for a match.

Frequently Asked Questions

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