Lat Long Converter for GPS & Maps: Decimal, DMS, and UTM Formats

Free Lat Long Converter — Convert Coordinates in Seconds

Need to convert coordinates quickly? A free lat long converter takes the headache out of switching between formats—decimal degrees, degrees/minutes/seconds (DMS), and other systems—so you can get accurate coordinates fast for mapping, GPS devices, GIS projects, or sharing locations.

Why use a lat long converter

• Speed: Instantly convert single coordinates or batches.
• Accuracy: Avoid manual rounding errors when switching formats.
• Compatibility: Get coordinates in the format required by mapping software, devices, or spreadsheets.
• Convenience: Many converters support copy-paste, file upload (CSV), and export options.

Common formats supported

• Decimal Degrees (DD): 37.7749, -122.4194
• Degrees, Minutes, Seconds (DMS): 37°46’29.64”N, 122°25’9.84”W
• Degrees and Decimal Minutes (DMM): 37°46.494’N, 122°25.164’W
• UTM / MGRS: For use in surveying and military mapping (if supported)
• Plus Codes / Open Location Codes: Compact codes for pinpointing locations without street addresses

How conversion works (simple explanation)

• Convert DMS to Decimal Degrees:
  • Decimal = degrees + (minutes/60) + (seconds/3600)
  • Apply negative sign for south latitudes and west longitudes.
• Convert Decimal Degrees to DMS:
  • Degrees = integer part of decimal
  • Minutes = integer part of (abs(decimal – degrees)60)
  • Seconds = (abs(decimal – degrees) * 60 – minutes) * 60

Quick step-by-step: convert a coordinate (example)

1. Start with DMS: 37°46’29.64”N, 122°25’9.84”W
2. Convert latitude: 37 + ⁄₆₀ + 29.⁄₃₆₀₀ = 37.7749
3. Convert longitude: -(122 + ⁄₆₀ + 9.⁄₃₆₀₀) = -122.4194
4. Result in Decimal Degrees: 37.7749, -122.4194

Features to look for in a free converter

• Batch conversion (CSV import/export)
• Support for multiple output formats (DD, DMS, DMM, UTM, Plus Codes)
• Copy-to-clipboard and permalink/share options
• Input validation and error messages for invalid coords
• Mobile-friendly interface and offline support (optional)

Use cases

• Sharing precise locations with colleagues or clients
• Preparing data for GIS analysis or mapping platforms
• Entering coordinates into GPS devices or navigation apps
• Converting location data in spreadsheets or databases

Tips for accurate results

• Always check hemisphere indicators (N/S, E/W) or use sign convention (+/–).
• Keep at least 4–6 decimal places in decimal degrees for sub-meter accuracy when needed.
• For large datasets,