Find the direct surface distance between two GPS coordinates in seconds using a free tool. Want to see how three simple actions turn coordinates into a precise distance?
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What the Distance Calculator does
Instantly estimate the straight-line surface distance from two latitude/longitude points. It relies on the values you enter—next, learn how to format those coordinates correctly.
Prepare accurate coordinate inputs
Use correct decimal degrees, include hemisphere signs, and respect any stated limits to avoid errors. A tiny format slip can skew results—see the exact steps to run the tool next.
Measure in 3 simple steps
Enter both coordinates, confirm labels and limits, then calculate to get the straight-line distance. After this quick run, discover how the tool computes that number.
Behind the math: how it estimates
The calculator uses spherical geometry to estimate surface distance and assumes a smooth Earth model; it won’t reflect terrain or route length. Curious about accuracy and real-world limits?
Read the full Distance Calculator guide
Step-by-step instructions, input tips, accuracy notes, and examples to help you measure straight-line distances reliably.