Distance Calculator — Great-Circle Lat/Lon Distance
Free distance calculator for maps and KML: enter two latitude/longitude points and get geodesic (great-circle) distance in meters, kilometers, miles, feet, and nautical miles. Preview both pins on OpenStreetMap — ideal for Google Earth, coverage maps, and local SEO radius checks.
Key features
- Measure Haversine great-circle distance between two lat,lon points
- See results in meters, km, miles, feet, and nautical miles at once
- OpenStreetMap preview of Point A and Point B
- Copy multi-unit results for reports, KML planning, and GBP coverage notes
What the Distance Calculator does
It computes the shortest path distance over a spherical Earth between two decimal coordinate points. Paste Point A and Point B as latitude, longitude, calculate, then copy the multi-unit result. This is the same family of math used for Google Earth geodesic measurements and KML circle radii.
Why local SEO and GBP teams use it
Quickly check how far a store is from a landmark, compare two branch pins, or verify that a service-radius claim matches real geodesic distance before you publish coverage maps or Circle Generator rings.
Great-circle vs driving distance
This tool measures as-the-crow-flies geodesic distance — not road routing or traffic travel time. Use it for map geometry and KML. For drive-time isochrones you still need a routing product.
How to use this tool (best practice)
1) Enter Point A as lat, lon. 2) Enter Point B as lat, lon. 3) Calculate. 4) Copy the unit you need. Next: Midpoint for the halfway pin, Destination Calculator to project a new point, or Circle Generator for a full coverage ring.
Frequently asked questions
Is this Distance Calculator free?
Yes. It is free on GBP Local Ranker’s KML Workbench at /free-tools/kml-workbench/distance-calculator — no login required for basic use.
Is this driving distance?
No. It is geodesic (as-the-crow-flies) great-circle distance, not road routing or traffic travel time.
What coordinate format do I use?
Enter both points as decimal latitude, longitude (example: 17.4401, 78.3489). KML files use lon,lat — swap order if you copied from KML.
Which units are shown?
Meters (base), kilometers, miles, feet, and nautical miles — all converted from the same Haversine meter result.
How far can the two points be?
Any two valid Earth coordinates, including city-scale and cross-continental pairs.
Does elevation / altitude matter?
No. This is 2D surface distance on a sphere. Altitude is ignored.
What Earth model is used?
A spherical Earth with mean radius 6,371 km — accurate enough for Google Earth visualization and local coverage maps.
Can I see the points on a map?
Yes. After you calculate, an OpenStreetMap preview shows Point A (center) and Point B.
What should I do after measuring distance?
Use Midpoint for the halfway coordinate, Destination Calculator to project along a bearing, or Circle Generator to draw a full KML ring.
Where is the related tool suite?
Open All KML Workbench Tools at /free-tools/kml-workbench for bearings, DMS, KML merge/reverse, and more.