Convert UTM to Latitude/Longitude
Recover standard GPS coordinates from UTM projection data. Useful for checking site plans or GIS export data on standard maps.
How to Use
Enter Zone, Easting, and Northing. Select Hemisphere (North/South). Click Convert.
Online Tool
🔍 What does this Lat/Long mean?
Latitude (+N/−S from the equator) and Longitude (+E/−W from Greenwich) define a geographic position on the WGS84 ellipsoid. Each degree of latitude is approximately 111km. At mid-latitudes, one second of latitude ≈ 31m. Your GPS receiver reports in this system natively.
A datum mismatch between WGS84 and NAD83(2011) can shift coordinates by up to 1.5m. Between WGS84 and NGVD29 vertical, offsets of 0.2–0.5m can cause FEMA flood zone misclassification. Always verify the datum before using coordinates for construction, legal, or FEMA submissions.
⚠️ US Liability & Accuracy Resources
Navigating boundary and construction projects across North America? Dig into the deep-dive state plane resources and litigation case studies:
Use Cases
- Verifying site coordinates on Google Earth.
- Fieldwork navigation using UTM maps.
FAQ
Q: Is this based on WGS84?
A: Yes, this tool assumes the WGS84 ellipsoid, which is standard for GPS data.
Q: What if I don't know the Hemisphere?
A: You must specify North or South. An incorrect hemisphere will result in a massive position error.
Q: How precise is the calculation?
A: The logic uses standard Karney/Transverse Mercator formulas verified for sub-millimeter precision.
Professional Verification Disclaimer
This content is provided for decision-support and educational purposes for geospatial professionals and does not constitute legal, surveying, or engineering advice. Regulations and official standards vary by jurisdiction and project scope. Information is based on publicly available standards as of January 11, 2026. For critical projects, always verify current requirements with:
- Licensed Professional Surveyors or Professional Engineers (PE) in the relevant jurisdiction
- Certified attorneys for legal interpretation of regulations
- Current guidelines from relevant authorities (FAA, JCAB, GSI, etc.)
Reference: Professional Use & Scope
Related Coordinate Conversion Tools
US State Plane (SPCS) Converters & Local Guides
Professional engineering and surveying transformations from state-specific conformal grids to GPS WGS84.
Using the wrong datum or applying coordinates without grid-to-ground correction can cause 1–400 metre positional errors — a leading cause of surveying negligence claims and contract disputes.