Capital City of a Country

About this calculator

This is a reference lookup rather than a formula-based calculation: pick any country and it returns its official capital city along with its international dialing code — the country code prefix defined by the ITU's E.164 numbering plan that routes a phone call to the right national network before the local number takes over. Capital cities aren't always a country's largest city (South Africa has three capitals; Bolivia's constitutional capital differs from its seat of government), which is part of why a quick, reliable lookup is useful rather than relying on memory.

Students studying geography, travelers checking a dialing code before calling internationally, and trivia or quiz writers verifying facts all use this kind of lookup, since capital cities and country codes are exactly the sort of detail that's easy to misremember or mix up between similarly named countries.