Free map tools that measure correctly
Draw a radius, measure a distance or an area, and share the result with a link. GeoDrafter calculates on the real shape of the Earth (the WGS84 ellipsoid), not on a flat map, and says how exact each answer is.
Map tools
- Radius mapDraw circles with an exact radius in km, miles or metres
- DistanceMeasure straight-line distance between points, leg by leg
- AreaMeasure the area of a field, plot or region in ha, acres or km²
- ElevationFind the height above sea level of any point, in metres or feet
- CoordinatesConvert lat/long, DMS, UTM and EPSG codes, one point or a list
Why use GeoDrafter
- Correct: circles, distances and areas are calculated geodesically with GeographicLib, so a 100 km radius is 100 km on the ground everywhere, also far north and far south.
- Honest about accuracy: every tool explains what limits the result, from map clicks to elevation data resolution.
- Share and export: what you draw is kept in the page link, and can be downloaded as KML or GeoJSON for Google Earth and GIS software.
- Free and simple: no account, no installation, works on phones.
Built by a GIS specialist. Need to convert the exported files to another format? FileReshape, our sister site, converts KML, GeoJSON, shapefiles and GPX in your browser.