About

geocoordinate.site is a growing collection of small, focused utilities for working with geospatial data. Each tool does one job well — converting coordinates, transforming file formats, measuring on a map, inspecting GeoJSON, calculating drone ground resolution, and more.

Who it's for

Surveyors, drone and UAV operators, GIS analysts, remote-sensing students, cartographers and developers who need quick, reliable answers without installing software or uploading sensitive data.

Why it's different

• Runs in your browser. Your coordinates and files never leave your device — nothing is uploaded.
• No sign-up. Open a tool and use it.
• Fast & lightweight. Built as a static site, so pages load instantly.
• Accurate. Geodesic calculations use well-established libraries (proj4, turf, mgrs) on the WGS84 ellipsoid.

The tools

• Coordinate Converter — DD, DMS, UTM, MGRS
• Format Converter — GeoJSON, KML, GPX, CSV
• Measure on Map — distance, area, perimeter
• GeoJSON Viewer — view & validate
• Bounding Box Tool
• Tile & Quadkey Calculator
• GSD Calculator — drone ground sample distance
• Geodesic Calculator

Have a tool you'd like added? Get in touch.