About the Geo Distance Calculator Online Free Tool

The Geo Distance Calculator Online Free Tool computes great-circle distance between two latitude/longitude points using spherical Earth math.

How to Use the Geo Distance Calculator Online

1. Enter the latitude and longitude for the start point.
2. Enter the latitude and longitude for the destination point.
3. Run the calculator to review distance in kilometers, miles, and nautical miles.

Choosing Options Correctly

Use decimal degrees with north/east positive and south/west negative. The result is a great-circle estimate, not road distance, terrain distance, or a legal survey measurement.

Common Use Cases

• Estimate air distance between cities.
• Check GPS point separation.
• Validate mapping or logistics calculations.

Quick FAQ

Does this calculate driving distance?
No. It calculates straight-line surface distance on the Earth, not road distance or travel time.

Which coordinate format should I use?
Use decimal degrees for latitude and longitude, with south and west entered as negative values.

Which distance units are available?
Use the output unit that fits your work, such as kilometers, meters, miles, or nautical miles.

Does the tool store coordinates?
No. The calculation runs locally in your browser.