Directories
Reference directories with a dedicated page per entry: postal codes for 5 countries, 1,500+ airports with IATA codes, country profiles, city-to-city distances, and paper and shoe size charts.
Postal Codes
Postal-code reference by country and city — with a dedicated page for each place.
Airport Codes
Look up an airport’s IATA code and back — name, city, and country for each airport.
Countries
A country reference — capital, population, currency, dialing code and more, with a page for each.
Distance Between Cities
Straight-line distance between cities in km and miles, plus an approximate flight time.
Paper Sizes
A4, A3, A5, Letter, and every standard size — in millimetres, centimetres, inches, and pixels.
Shoe & Clothing Sizes
EU ↔ US ↔ UK ↔ cm charts for men, women, and kids, plus clothing sizes — a page per EU size.