Texas Coordinate Transform

OPDL

About this app

TX Coord Transform is a professional-grade coordinate conversion tool designed specifically for surveyors, engineers, and GIS professionals working in Texas.

FEATURES:

- Lat/Lon ↔ DMS — Convert between decimal degrees and Degrees-Minutes-Seconds instantly.

- State Plane Zone Converter — Transform coordinates between any of the 5 Texas State Plane zones (North, North Central, Central, South Central, South).

- Lat/Lon → State Plane — Convert geographic coordinates to Texas State Plane Northing/Easting in US Survey Feet.

- State Plane → Lat/Lon — Convert State Plane coordinates back to geographic decimal or DMS format.

- Interactive Zone Map — Visual county-by-county map of Texas showing which State Plane zone each county belongs to.

Built for field use — fast, offline-capable, and optimized for mobile screens. No account required, no ads, no data collection.

Perfect for land surveyors, civil engineers, GIS technicians, and anyone working with Texas coordinate systems on a daily basis.