To convert DD to DDM: Degrees = floor(abs(DD)). DecimalMinutes = (abs(DD) - Degrees) × 60. Add N/S or E/W direction.
DD to DDM 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 DD to DDM: Step by Step
- 1 Take the absolute value of the decimal degree coordinate.
- 2 The whole number is the degrees.
- 3 Subtract the degrees and multiply the remainder by 60.
- 4 The result (with its decimal) is your decimal minutes.
- 5 Append N/S for latitude and E/W for longitude based on the sign of the original coordinate.
Worked Example
Input
48.858400, 2.294500
Latitude conversion:
floor(48.8584) = 48° | 0.8584 × 60 = 51.504' → 48°51.504'N
Longitude conversion:
floor(2.2945) = 2° | 0.2945 × 60 = 17.670' → 2°17.670'E
Result:
48°51.504'N 2°17.670'E
Why Convert DD to DDM?
Garmin GPS units, aviation charts, and marine plotters use DDM. You may receive a coordinate from Google Maps in DD and need to enter it on a Garmin device in DDM format.
Common Mistakes to Avoid
- ✕ Multiplying the entire DD value (not just the remainder) by 60
- ✕ Rounding degrees before computing minutes