DMS ↔ decimal degrees (lat/lon).
Decimal: 35.65861111111111, 139.74527777777777 DMS: 35°39'31"N 139°44'43"E Latitude: 35.65861111111111 Longitude: 139.74527777777777
Yes.
No.
Haversine km/mi + bearing.
Japan 19-plane rectangular coordinates ↔ lat/lon (approx).
Convert GPX track points ↔ GeoJSON LineString.
日本邮编查地址。