Coordinate Converter Free Online Tool 2026

Last updated March 22, 2026

Coordinate Converter Examples

The Coordinate Converter transforms geographic coordinates between decimal degrees, DMS, DDM, UTM, MGRS, and other formats. Below are practical conversion examples.

Decimal Degrees to DMS

Input (Decimal Degrees):

Latitude:  40.7128
Longitude: -74.0060

Output (Degrees Minutes Seconds):

Latitude:  40° 42' 46.08" N
Longitude: 74° 00' 21.60" W

DMS to Decimal Degrees

Input:

51° 30' 26.4" N, 0° 7' 39.6" W

Output:

Latitude:  51.507333
Longitude: -0.127667

Decimal Degrees to UTM

Input:

Latitude:  48.8566
Longitude: 2.3522

Output (UTM — WGS84):

Zone:     31T
Easting:  452,296 m E
Northing: 5,411,718 m N

UTM to Decimal Degrees

Input:

Zone:     18T
Easting:  583,960 m E
Northing: 4,507,523 m N

Output:

Latitude:  40.7128° N
Longitude: 74.0060° W

Decimal Degrees to MGRS

Input:

35.6762° N, 139.6503° E  (Tokyo)

Output (MGRS):

54SVE 6271 4272

Degrees Decimal Minutes (DDM)

Input (DDM format used by many GPS devices):

N 40° 42.768', W 74° 00.360'

Output (Decimal Degrees):

Latitude:  40.7128
Longitude: -74.0060

Datum Conversion — NAD27 to WGS84

Input (NAD27 datum, older US maps):

Latitude:  37.7749° N
Longitude: 122.4194° W

Output (WGS84 — GPS standard):

Latitude:  37.7751° N
Longitude: 122.4183° W

Datum shift applied: ~10 meters

Precision Reference

• 4 decimal places (DD) — ~11 meters precision
• 5 decimal places (DD) — ~1.1 meters precision
• 6 decimal places (DD) — ~0.11 meters precision (surveying grade)
• DMS to nearest second — ~31 meters precision
• DMS to nearest 0.1 second — ~3 meters precision

Common Format Reference

Location: Eiffel Tower, Paris

Decimal Degrees:    48.858370, 2.294481
DDM:                N 48° 51.502', E 2° 17.669'
DMS:                48° 51' 30.1" N, 2° 17' 40.1" E
UTM:                31U 448,252 E, 5,411,943 N
MGRS:               31UDQ 48252 11943

Common Use Cases

• Converting GPS coordinates (decimal degrees) to map format (DMS)
• Transforming coordinates for GIS software that requires UTM
• Converting military MGRS coordinates for civilian mapping
• Reconciling coordinate data from different sources before merging datasets
• Validating location data in web applications
• Converting between NAD27/NAD83 and WGS84 for legacy map data

Enter coordinates in any supported format and get instant conversions to all other formats, with a map preview to visually verify the location.