🌍 Coordinates Converter
Instantly translate geographic coordinates between decimal, DDM, and DMS formats.
Choose your input format—decimal degrees, DDM, or DMS—and enter latitude/longitude. The converter provides all three formats for quick cross-referencing across mapping tools.
Decimal Degrees
Latitude: 40.712800
Longitude: -74.006000
Degrees Decimal Minutes (DDM)
Latitude: 40° 42.7680' N
Longitude: 74° 0.3600' W
Degrees Minutes Seconds (DMS)
Latitude: 40° 42' 46.08" N
Longitude: 74° 0' 21.60" W
How to Use This Calculator
Choose your input format
Select decimal, DDM, or DMS to match the coordinate style you currently have.
Enter latitude and longitude
Follow the example format for your selection. Include hemispheres (N/S/E/W) when using DDM or DMS.
Copy the desired output
Use the conversion cards to copy coordinates directly into GIS software, spreadsheets, or navigation devices.
Formula
DMS → Decimal Degrees = degrees + minutes / 60 + seconds / 3600 (apply negative for S/W hemispheres)
Decimal Degrees → DDM = degrees + decimal_minutes; decimal_minutes = (decimal_fraction × 60)
Decimal Degrees → DMS = convert decimal to minutes and seconds with hemispheres for sign.
Use the formula breakdown to confirm the calculation logic or perform the conversion manually if needed.
Full Description
Coordinate formats vary across navigation devices, GIS datasets, and surveying notes. This converter streamlines collaboration by presenting decimal degrees, DDM, and DMS at once, eliminating manual arithmetic and transcription errors.
Whether you are logging field observations, importing GPS coordinates, or preparing map labels, you can switch between standard formats instantly.
Pair this tool with the Lat Long to UTM Converter for projected coordinate systems, or the Degrees Minutes Seconds Calculator when you need step-by-step breakdowns or adjustments to individual components.
Frequently Asked Questions
How do I represent west longitudes or south latitudes?
Use negative values in decimal format or append W/S in DDM/DMS formats (e.g., 74° 0' 21" W).
What accuracy do the conversions maintain?
The converter retains full floating-point precision internally and displays values rounded for readability.
Can I convert UTM coordinates here?
No. Use the Lat Long to UTM Converter for projected coordinates. This tool focuses on angular formats only.
Do I need to include degree symbols?
Symbols are optional. The parser accepts standard spacing (e.g., 40 42 51 N) as long as the order is consistent.