Generate fast 32-bit xxHash32 hashes optimized for embedded systems and 32-bit platforms.
About
xxHash32 is a fast 32-bit hash function using the XXH32 algorithm, optimized for 32-bit CPUs with minimal memory footprint, delivering excellent performance for resource-constrained environments.
Specifications
Output Size32 bits
StandardxxHash specification (Yann Collet)
Standard Year2012
Use Cases
—Embedded systems and IoT devices
—32-bit mobile applications
—Real-time data streaming
—Hash tables in memory-constrained environments
—Legacy 32-bit platform compatibility
Security Notice
xxHash32 is not cryptographically secure and should not be used for security-sensitive applications.
Frequently Asked Questions
xxHash32 remains relevant for 32-bit embedded systems, IoT devices, and legacy platforms where 64-bit operations are expensive. On modern 64-bit systems, xxHash64 or xxHash3 are preferred for better performance.
xxHash32 produces a 32-bit output, meaning it has a 1 in 4 billion chance of random collision. This is sufficient for checksums and hash tables but inadequate for large-scale systems with billions of items, where xxHash64 or xxHash128 should be used.
For modern mobile devices (64-bit), prefer xxHash64 or xxHash3. Use xxHash32 only if targeting very old 32-bit devices or if you have specific memory constraints. Most modern smartphones will run xxHash64 faster due to native 64-bit support.