GPS Coordinate Converter
Enter a latitude and longitude in decimal degrees to instantly see it converted into Degrees Minutes Seconds (DMS) and Degrees Decimal Minutes (DDM) formats.
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How to use
- Enter latitude and longitude as decimal degrees (for example, 40.7128, -74.0060).
- View the same coordinate automatically converted to DMS and DDM formats below.
- Copy whichever format you need.
What is this tool?
GPS Coordinate Converter translates a location between the three most common coordinate notations: Decimal Degrees (DD), used by most modern mapping software and GPS devices; Degrees Minutes Seconds (DMS), the traditional surveying and navigation format; and Degrees Decimal Minutes (DDM), commonly used in marine and aviation navigation.
Common uses
- Converting coordinates from a GPS device into a format required by another system
- Entering coordinates from a nautical chart or survey document into mapping software
- Cross-checking a location written in an unfamiliar coordinate format
- Preparing coordinates for aviation or maritime navigation equipment
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FAQ
What's the difference between DMS and DDM?
DMS splits a coordinate into whole degrees, whole minutes and decimal seconds. DDM splits it into whole degrees and decimal minutes, skipping seconds entirely — DDM is more common in marine GPS units.
What do N/S and E/W mean?
They indicate the hemisphere: N (north) or S (south) for latitude, and E (east) or W (west) for longitude. A negative decimal latitude corresponds to S, and a negative decimal longitude corresponds to W.
Why do I get an error for my coordinates?
Latitude must be between -90 and 90, and longitude between -180 and 180 — values outside this range aren't valid geographic coordinates.