google-libphonenumber
Parse, format, store and validate phone numbers.
Pricing
Free tier
Flat rate
Adoption
↘CoolingLicense
Open Source
Data freshness
Aging · Jun 8, 2026Overview
What is google-libphonenumber?
google-libphonenumber is a library that provides utilities for parsing, formatting, storing, and validating international phone numbers. It's essential for applications needing to handle global phone number data accurately.
Key differentiator
“google-libphonenumber offers comprehensive and accurate phone number handling capabilities, making it a reliable choice for developers working with international phone numbers.”
Capability profile
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Honest assessment
Strengths & Weaknesses
↑ Strengths
↓ Weaknesses
Primary implementation is in Java, and while there are ports for other languages like Python and JavaScript, they may not have the same level of functionality or be as well-maintained.
Integrating google-libphonenumber into projects that are not Java-based can require additional configuration and dependencies, which may introduce complexity and potential issues with version compatibility.
The library relies on extensive metadata for phone number validation across countries, which can increase memory usage and slow down applications when handling a high volume of requests.
Phone numbering plans change frequently, and while google-libphonenumber is regularly updated, there may be delays in incorporating the latest changes from various countries.
Fit analysis
Who is it for?
✓ Best for
Developers building international applications that require accurate phone number handling
Projects needing to validate and format phone numbers according to specific country rules
✕ Not a fit for
Applications requiring real-time validation against live databases (this tool uses static data)
Use cases where the library's dependency on Java or JavaScript is not feasible
Cost structure
Pricing
Free Tier
Available
Open source — free to use
Starts at
$0
Model
Flat rate
Enterprise
None
Performance benchmarks
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Ecosystem
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Next step
Get Started with google-libphonenumber
Step-by-step setup guide with code examples and common gotchas.