Global Data for Modern Apps
LocaleDB is a comprehensive, open-source database of localization data, for developers building international applications and for anyone curious about how the world writes its dates, numbers and money. We aggregate open data from sources including Unicode CLDR, the IANA time zone database, Wikidata and libphonenumber.
The Challenge
Currency symbol placement (before or after?)
Date format differences (DD/MM vs MM/DD)
Number separators (1,250.00 vs 1.250,00)
Address formatting conventions
Time zones and calendar systems
Scattered documentation & heavy libraries
Our Solution
Comprehensive Data
- Structured JSON for every country
- Ready-to-use formatting rules
- CLDR-based accuracy
- Global Airport Database (IATA/ICAO)
Developer Experience
- Fast, static generation
- No server required
- Open source (MIT Licensed)
- Community contributions
Trusted Data Sources
CLDR (Common Locale Data Repository)mledoze/countriesWorld BankIANA tzWikidataGoogle libphonenumberGoogle libaddressinputmwgg/AirportsIP2Locationourworldincode/currencyCommunity Contributions
Open Source & Community Driven
LocaleDB is MIT licensed and welcomes contributions. Whether you're fixing a typo, adding a missing country, or improving the UI, we'd love your help.