AstroCarto is a web-based astrocartography platform that turns birth data into interactive world maps, relocation charts, and city comparisons. It lets users generate free charts, inspect nearby planetary lines, measure approximate line distance and strength, and check any location against the map. The site also offers related astrology calculators, including natal, birth, transit, rising sign, solar return, and relocation charts. An optional AI layer attaches calculated map signals to city-specific questions, helping users turn location-based astrology into clearer, more practical interpretation. Core chart generation is free without signup, while paid credits extend AI follow-up, chat history, and map downloads.