🗺️ Geography & Science

Geography, astronomy, coordinates, mapping, and science utilities

Calculate the geographic midpoint between two coordinates

Calculate the initial bearing (forward azimuth) between two coordinates

Calculate the great-circle distance between two coordinates using the Haversine formula

Convert latitude and longitude to Maidenhead locator system (used by amateur radio operators)

Convert Maidenhead locator system to latitude and longitude (used by amateur radio operators)

Calculate area and perimeter from GPS coordinates on a map

Calculate blue hour times - the magical time before sunrise and after sunset with deep blue skies

Predict and display information about major annual meteor showers

Calculate golden hour times - the best time for photography with soft, warm light

Calculate distance and direction between cities around the world

Calculate daylight hours, sunrise, and sunset times for any location and date

Find postal code formats and examples for any country