To convert DDM to DD: DD = Degrees + (DecimalMinutes ÷ 60). Apply negative for South latitude or West longitude.
DDM to DD Converter
Could not parse that coordinate.
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 DD: Step by Step
- 1 Identify the whole degrees (before the ° symbol).
- 2 Take the decimal minutes value (after the ° symbol).
- 3 Divide decimal minutes by 60.
- 4 Add the result to degrees.
- 5 Apply negative sign if the coordinate is South (S) or West (W).
Worked Example
Input
48°51.504'N 2°17.670'E
Latitude conversion:
48 + (51.504÷60) = 48 + 0.8584 = 48.8584°N
Longitude conversion:
2 + (17.670÷60) = 2 + 0.2945 = 2.2945°E
Result:
48.858400, 2.294500
Why Convert DDM to DD?
Garmin GPS devices and aviation charts use DDM by default. Web maps and APIs require Decimal Degrees, making this conversion essential for pilots and boaters.
Common Mistakes to Avoid
- ✕ Dividing decimal minutes by 100 instead of 60
- ✕ Confusing decimal minutes with seconds
- ✕ Forgetting negative sign for W/S