ISO 639
About ISO 639
Language codes, from the two letter set 1 codes like en and fr to the three letter sets covering more than seven thousand languages. First approved as an ISO Recommendation in 1967, the separate parts were merged into a single standard in 2023. Web pages, libraries and linguistics databases tag languages with them.
Related Standards
ISO/IEC 10646 UCS
The Universal Coded Character Set, first published in 1993, assigns unique numbers to characters of all scripts, now more than...
ISO 8601
The international date and time notation standard, best known for YYYY-MM-DD ordering that sorts correctly. The 2019 edition...
ISO 3166
Country and subdivision codes, from FR for France to JP for Japan, first published in 1974. The alpha 2 codes underpin internet...
ISO 4217
Three letter currency codes such as USD, EUR and JPY, standardized since 1978. They define minor units, so most currencies carry...