GPS Coordinate Converter

Coordinate format reference

• Decimal Degrees (DD): 40.689247, -74.044502 — used by Google Maps, GPS APIs
• Degrees Minutes Seconds (DMS): 40°41'21.29"N — used in aviation, marine, traditional maps
• Hemisphere: N (positive lat), S (negative lat), E (positive lng), W (negative lng)
• Each degree of latitude ≈ 111 km. Longitude varies by latitude — 111 km at equator, narrower toward poles

Conversion formulas

• DMS → DD: DD = Degrees + Minutes/60 + Seconds/3600
• DD → DMS: Degrees = floor(DD), Minutes = floor((DD−Deg)×60), Seconds = ((DD−Deg)×60−Min)×60