How accurate is the map distance calculator?

The calculator uses Google Maps' geodesic distance computation, which accounts for the curvature of the Earth. For typical distances, accuracy is within 0.1-0.5%. Accuracy depends on how precisely you place the points along the path.

Can I measure curved or winding paths?

Yes. Place multiple points along curves and bends to trace the path accurately. The more points you add along curves, the more precise the total distance will be.

What units are supported?

Distance can be displayed in meters (m), feet (ft), kilometers (km), and miles (mi). You can switch units at any time and all measurements update instantly.

Can I adjust points after measuring?

Yes. After finishing the measurement, you can drag any point to adjust its position. The total distance and segment lengths recalculate in real time.

Free Distance Calculator - Measure Distance on a Map

About Distance Measurement on Maps

Measuring distances on a map is essential for planning routes, estimating travel times, laying out fence lines, planning irrigation, and understanding property boundaries. This free distance calculator lets you place points on a satellite map to measure any path — no downloads or registration needed.

The tool uses geodesic calculations that account for the curvature of the Earth, giving you accurate real-world distances regardless of how far apart the points are.

How It Works

Navigate to your area

Use the satellite view to find the path or boundary you want to measure. The map will try to center on your current location automatically.

Place points along the path

Click on the map to place points along the route. Each segment between consecutive points shows its distance.

Finish measuring

Press "Finish" to complete the measurement. View the total distance and a breakdown of each segment.

Fine-tune

Drag any point to adjust the path. Distances update in real time. Switch units with the dropdown.

Common Use Cases

✓ Fencing & Boundaries — Measure fence lines and property perimeters for material estimation
✓ Walking & Running Routes — Plan and measure outdoor exercise routes
✓ Road & Path Planning — Estimate distances for driveways, paths, and access roads
✓ Irrigation Layout — Plan pipe runs and irrigation lines across fields
✓ Surveying — Quick distance checks between landmarks and reference points
✓ Construction — Measure site perimeters, utility runs, and access distances

Accuracy Information

This tool uses the Google Maps Geometry library's computeDistanceBetween() function, which calculates geodesic (great-circle) distances accounting for the Earth's curvature. For most practical measurements, expect accuracy within 0.1–0.5%.

For curved paths like roads or rivers, place more points along the curves for better accuracy. The satellite imagery helps you align points precisely with visible features like roads, fences, tree lines, or waterways.

Free Distance Calculator