Geography & Maps
Coordinates, distances and map projections.
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Antipode Finder Find the point on Earth diametrically opposite to any latitude/longitude.
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Bearing & Midpoint Calculator Initial and final bearing plus midpoint between two coordinates.
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Bearing → Cardinal Direction Translate a compass bearing in degrees into 16- or 32-wind cardinal direction names.
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Centroid of Geographic Points Find the mean (centroid) of a list of lat/lng points on the sphere.
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Country Border Lookup List the countries bordering any given country.
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Country Capital & Facts Look up a country's capital, driving side, area and population.
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Country Centroid Lookup Approximate geographic centroid for every country by name or ISO code.
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Country Flag Emoji from ISO Code Convert a 2-letter ISO country code into its flag emoji.
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DMS ↔ Decimal Coordinate Converter Convert latitude / longitude between decimal degrees, decimal minutes and DMS.
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Geohash Encoder & Decoder Encode a coordinate to a geohash or decode one back to a cell.
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Great-Circle Waypoints List N intermediate points along the great-circle route between two coordinates.
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Haversine Distance Calculator Great-circle distance between two latitude / longitude points.
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International Dial Code Lookup Look up E.164 country calling codes (+1, +44, +81 …).
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ISO 3166-2 Subdivision Lookup ISO 3166-2 codes for US states and Canadian provinces.
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Maidenhead Grid Locator Encode and decode amateur-radio Maidenhead grid locators.
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Map Projection Reference Searchable reference for common map projections — what each is good for.
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MGRS Coordinate Converter Convert latitude / longitude to a Military Grid Reference (and back).
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Plus Codes (Open Location Code) Encode and decode Open Location Codes (Plus Codes).
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Polygon Area (lat/lng) Compute the area of a polygon on Earth from lat/lng vertices.
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Slippy Map Tile Coordinate Convert between lat/lng and slippy map tile X/Y/Z.
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UTM Coordinate Converter Convert latitude / longitude to UTM zone, easting and northing (and back).