GIS tools — 5 free, in your browser
GIS, geographic coordinate, and map utilities with proj4-level accuracy.
All gis tools
Coordinate Converter
Decimal degrees ↔ DMS ↔ UTM — paste any format, get them all.
Distance Calculator
Great-circle distance and bearing between any two points on Earth.
UTM Converter
Lat/lng → UTM zone, easting, and northing with hemisphere.
KML → GeoJSON
Convert Google Earth KML to clean GeoJSON for any mapping library.
GeoJSON Inspector
Validate GeoJSON, count features, compute bounding box and centroid.
What people do with the gis tools
- ·Convert coordinates between DMS, decimal, MGRS, UTM
- ·Compute great-circle distance and bearing
- ·Project geometry between WGS84, Web Mercator, UTM
- ·Compute area, perimeter, centroid of polygons
- ·Convert between KML, GeoJSON, GPX
Why Xonvert GIS
Compared with QGIS (desktop), ArcGIS Online (paid), Xonvert's gis tools trade install, license, and account for a URL. Free, private, fast, and offline-capable once loaded. The depth a desktop tool offers, with none of the friction.
Frequently asked questions
Are the Xonvert GIS tools free?+
Yes — every tool is free. No signup, no credit card, no trial limits. Pro removes the small export watermark on free tools and lifts daily quotas on the heaviest operations.
Do my files leave my device?+
No. The GIS tools run entirely in your browser. Your files are processed locally and never reach our servers.
Do they work offline?+
Yes — once a tool page is loaded, the browser caches its code and the tool keeps working without internet.
Do they work on mobile?+
Yes. Every gis tool works in modern mobile browsers on Android and iOS without an app install.
Can I use these for commercial work?+
Yes, with no licensing fees. We don't claim rights to anything you produce.