Convert Degrees Minutes Seconds (DMS) ↔ Decimal Degrees — Convert GPS coordinates between DMS and decimal formats.
| City | DMS | Decimal |
|---|---|---|
| Seoul | 37° 33' 57" N, 126° 58' 41" E | 37.5658, 126.9778 |
| Busan | 35° 10' 48" N, 129° 4' 33" E | 35.1800, 129.0756 |
| Jeju | 33° 29' 53" N, 126° 31' 44" E | 33.4983, 126.5289 |
DMS (Degrees Minutes Seconds) expresses coordinates in degrees (°), minutes ('), seconds ("). 1 degree = 60 minutes, 1 minute = 60 seconds. For example, Seoul's latitude is 37° 33' 57" N. Decimal Degrees expresses coordinates with decimals. Seoul's latitude is 37.5658° N.
Formula: Decimal = Degrees + (Minutes ÷ 60) + (Seconds ÷ 3600). Example: 37° 33' 57" converts to: 37 + (33 ÷ 60) + (57 ÷ 3600) = 37.5658°. South (S) or West (W) uses negative (-).
Method: ① Integer part is degrees (°). ② Decimal part × 60 = minutes ('). ③ Minutes decimal part × 60 = seconds ("). Example: 37.5658° → degrees = 37, (0.5658 × 60) = 33.948 minutes → minutes = 33, (0.948 × 60) = 56.88 seconds → 37° 33' 57".
Seoul: 37° 33' 57" N, 126° 58' 41" E (37.5658°, 126.9778°). Busan: 35° 10' 48" N, 129° 4' 33" E (35.1800°, 129.0756°). Jeju: 33° 29' 53" N, 126° 31' 44" E (33.4983°, 126.5289°).
GPS coordinates consist of Latitude (-90° to +90°) and Longitude (-180° to +180°). Google Maps uses decimal format (37.5658, 126.9778). Smartphone camera photos store GPS coordinates in DMS format in EXIF data.