UTM and Lat-Lon Conversion

Formula and source

Krueger forward and inverse formulas for WGS84 ellipsoid; series expansion to 4th order. Round-trip error < 0.1 m at typical latitudes.

USGS Krueger series by name; J.P. Snyder, USGS PP 1395 (Map Projections - A Working Manual, 1987) by name.

Audience

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Related tools

• Pacing and Distance
• GPS Distance (Haversine)
• Magnetic Declination and Bearing Conversion

Posture

Rough Logic answers the math question the working professional asks on the job. The site is a calm, fast, ad-free, account-free, ever-free reference. It does not interpret code. It does not replace the licensed professional. It does not store your inputs. The Authority Having Jurisdiction governs all installations and inspections.