CityHash Hash Generator

Generate CityHash hashes from text strings, files, or other content types with our efficient online tool

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High Performance

CityHash is optimized for speed and efficiency with modern processors

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Multiple Variants

Generate CityHash32, CityHash64, and CityHash128 hashes as needed

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1-Click Copy

Copy generated hash to clipboard with a single click

🔒 Client-Side Processing
All hashing is done in your browser using JavaScript. Your data never leaves your device, ensuring maximum privacy and security.

Text Input

File Upload

Hash Variant:

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Your CityHash will appear here...

💡 For developers: Generate CityHash hashes with:

# Install cityhash library: pip install cityhash

from cityhash import CityHash64, CityHash32, CityHash128

hash64 = CityHash64("your_text")

hash32 = CityHash32("your_text")

hash128 = CityHash128("your_text")

# Generate CityHash using Python cityhash library

About CityHash Algorithm

CityHash is a family of non-cryptographic hash functions developed by Google, optimized for hashing strings and data for hash tables and other data structures. It is designed to be fast and provide good hash distribution.

CityHash Variants

• CityHash64: 64-bit hash - the most commonly used variant with excellent performance
• CityHash32: 32-bit hash - useful when smaller hash size is needed
• CityHash128: 128-bit hash - provides larger hash space for reduced collisions

⚠️ Important: CityHash is a non-cryptographic hash function and should NOT be used for security purposes like password hashing, digital signatures, or any security-sensitive applications. It is designed for performance in data structures and checksums.

Common Uses of CityHash

CityHash is widely used in performance-critical applications where fast hashing is essential:

Application	Usage
Hash Tables	Fast key hashing for dictionaries and hash maps
Database Systems	Indexing and partitioning of data
Caching Systems	Fast cache key generation
Data Processing	Data deduplication and checksums

CityHash vs Other Hash Algorithms

Algorithm	Type	Output Size	Primary Use
CityHash64	Non-crypto	64 bits	Performance, hash tables
MD5	Cryptographic	128 bits	Checksums, legacy security
SHA-256	Cryptographic	256 bits	Security, certificates
xxHash	Non-crypto	64 bits	Extreme performance

💡 CityHash is typically 2-3x faster than MD5 and provides excellent distribution for non-cryptographic use cases. For security applications, always use cryptographic hash functions like SHA-256 or SHA-3.

Performance Characteristics

CityHash is specifically designed for modern 64-bit processors and provides exceptional performance:

• Optimized for x86-64 and ARM64 architectures
• Uses hardware-accelerated instructions when available
• Excellent performance on both short and long strings