Latitude/Longitude Validator (Range & Format)
Validates latitude and longitude values for correct range and DD, DMS or DDM format.
Enter latitude & longitude
Results
Enter a value and press Convert to see the results in DD, DMS and DDM.
Before you rely on this: First-pass guide only. Verify safety-critical or regulated work against the relevant standards, your project requirements and a qualified professional.
How to use this calculator
- Enter a latitude and longitude in DD, DMS or DDM.
- Press Convert.
- If a value is out of range you'll get a clear error; otherwise it's shown cleanly in all formats.
How it works
Checks that a coordinate is valid — latitude within ±90°, longitude within ±180° — and reformats it consistently across DD, DMS and DDM.
Worked example
Valid check. −31.95, 115.86 is valid; a latitude of 95° would be flagged as out of range.
Frequently asked questions
What ranges are valid?
Latitude must be between −90° and 90°, longitude between −180° and 180°.
Related tools
- Signed vs Cardinal Coordinate Notation Converter
- Decimal Degrees to DDM Converter
- DDM to DMS Converter
- DMS to DDM Converter
- DDM to Decimal Degrees Converter
- Latitude and Longitude Converter
Explore more in Surveying, Coordinates, GIS & CAD.
Cite this tool
Zerdly. (2026). Latitude/Longitude Validator (Range & Format). Retrieved from https://www.zerdly.com/tools/latitude-longitude-validator-range-and-format-check/
Tip: Enter any known values to calculate the remaining results.
All calculations run in your browser. Your inputs are never saved or transmitted.