How accurate is the map area calculator?

The calculator uses Google Maps' geodesic area computation, which accounts for the curvature of the Earth. For typical land parcels, accuracy is within 0.1-0.5% of the true area. Accuracy depends on how precisely you place the boundary points.

Can I measure irregularly shaped fields?

Yes. You can place as many boundary points as needed to trace complex, irregular shapes. The more points you use along curves and corners, the more accurate your measurement will be.

What units are supported?

Area can be displayed in square meters (m²), square feet (ft²), acres (ac), and hectares (ha). Perimeter is available in meters, feet, kilometers, and miles. You can switch units at any time.

Can I adjust the boundary after measuring?

Yes. After closing the polygon, you can drag any vertex to adjust the boundary. The area and perimeter recalculate in real time as you move points.

Are my measurements saved?

Yes. Your drawn polygon and unit preferences are saved in your browser's local storage. When you return to the page, your last measurement will be restored automatically.

Free Map Area Calculator - Measure Land Area on a Map

About the Field Area Measure Tool

This tool lets you measure the area of any field, lot, or parcel of land directly on a satellite map — no GPS device or on-site survey required. Draw a polygon around your area of interest and get an instant area and perimeter calculation.

It's built for farmers, landowners, real estate professionals, and anyone who needs a fast, reasonably accurate area estimate without hiring a surveyor.

How It Works

Find your location

Search an address or navigate the satellite map to your field or property.

Trace the boundary

Tap or click points around the edge of the area you want to measure.

Close the polygon

Connect back to your starting point to complete the shape.

Read your area

Instantly see the area in acres, hectares, square feet, or square meters, plus perimeter.

Common Use Cases

✓ Farm Field Measurement — Measure crop field size for planning, seed orders, and yield calculations
✓ Land Purchase Due Diligence — Verify a listed acreage before buying a property
✓ Lawn & Landscaping — Measure yard area for sod, mulch, or fertilizer orders
✓ Construction Site Planning — Estimate site area for grading, excavation, or material bids
✓ Hunting Lease Boundaries — Check the total acreage of a lease or hunting property

Accuracy Information

Area measurements are calculated using precise geodesic math on your traced polygon coordinates, so accuracy mainly depends on how closely your traced boundary matches the true property line.

For legal or survey-grade accuracy (property disputes, permits, closings), use a licensed surveyor. This tool is best for planning, estimation, and general reference.

Free Map Area Calculator - Measure Land Area on a Map | LandLens

About the Field Area Measure Tool

How It Works

Common Use Cases

Accuracy Information

Frequently Asked Questions

How accurate is satellite-based area measurement?

Can I measure area without visiting the property?

What units can I measure in?

Can I save or export my measurements?

Need GPS-Tracked Field Measurement?

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