To convert DDM to DMS: WholeMinutes = floor(DecimalMinutes). Seconds = (DecimalMinutes - WholeMinutes) × 60.
DDM to DMS Converter
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DD
Decimal Degrees
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DMS
Deg. Min. Sec.
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DDM
Deg. Decimal Min.
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UTM
Univ. Trans. Mercator
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MGRS
Military Grid
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Geohash
Base32
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Plus Code
Open Location Code
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How to Convert DDM to DMS: Step by Step
- 1 Keep whole degrees as-is.
- 2 Take the floor of decimal minutes → whole minutes.
- 3 Subtract: (decimal minutes - whole minutes) × 60 → seconds.
- 4 Keep N/S or E/W suffix.
Worked Example
Input
48°51.504'N 2°17.670'E
Latitude conversion:
floor(51.504)=51'; (0.504×60)=30.24" → 48°51'30.24"N
Longitude conversion:
floor(17.670)=17'; (0.670×60)=40.20" → 2°17'40.20"E
Result:
48°51'30.24"N 2°17'40.20"E
Why Convert DDM to DMS?
Some older maps, military references, and geographic databases use DMS. Converting from a Garmin's DDM output may be necessary.
Common Mistakes to Avoid
- ✕ Dividing the decimal minutes fraction by 100 instead of 60