Is this land area calculator free to use?

Yes. This tool is 100% free. You can draw as many areas as you want, measure them, and export results without paying anything or creating an account.

How accurate is this calculator?

The math is very accurate. It uses the Shoelace formula on projected coordinates from the WGS-84 ellipsoid (R = 6,378,137 m). The main source of error is how carefully you place your points on the map. Zoom in close and place points right on property lines for the best results.

Can I measure land on my phone?

Yes. The calculator works on phones and tablets. Tap the map to place points just like you would click on a computer. Use Use My Location to jump to where you are standing.

Can I draw more than one area at a time?

Yes. Click Draw New Area again after finishing your first shape. Each area gets its own row in the breakdown table, and the tool adds them all together for the total.

How do I delete a single point from my shape?

Click Edit Active , then click the white circle on the point you want to remove. The shape must keep at least 3 points, so you cannot delete a point if only 3 remain.

How do I add a point to an existing shape?

Click Edit Active . You will see small orange circles at the middle of each edge. Click one of those orange circles to add a new corner point at that spot. Then drag it where you need it.

What is the Shoelace formula?

The Shoelace formula is a math method that finds the area of any polygon when you know the coordinates of its corners. It multiplies pairs of coordinates in a cross pattern, adds them up, and divides by two. It is called "Shoelace" because the cross pattern looks like lacing a shoe. You can see the full worked-out math in the Step-by-Step Solution section below the map.

Can I search by GPS coordinates?

Yes. Type coordinates in decimal format like 39.7392, -104.9903 into the search bar and press Search. The map will jump right to that spot.

What map views are available?

You can choose from four views: Satellite (aerial photos), Roadmap (street map), Hybrid (aerial photos with labels), and Terrain (elevation and contour lines). Satellite is best for tracing property lines.

What does the KML export do?

KML is a file format used by Google Earth and other mapping software. When you click Download KML , you get a file you can open in Google Earth to see your drawn areas in 3D. It also includes the area and perimeter in the description.

Why does my area show 0 or a very small number?

You need at least 3 points to make a shape. If you only placed 1 or 2 points, the area will be zero. Also, if all your points are in a straight line, the area will be nearly zero. Make sure your points form a closed shape.

Can I measure land that is not a simple rectangle?

Yes. You can draw any shape — triangles, L-shapes, curves approximated with many points, or irregular parcels with dozens of corners. Just place enough points to follow the boundary closely.

How do I measure a curved boundary?

Place many points close together along the curve. The more points you add, the closer your outline will match the real curved edge. Click Edit Active and use the orange midpoints to add extra corners where needed.

Does this tool account for hills and elevation?

No. This calculator measures plan area , which is the flat area as seen from above. It does not add extra area for slopes or hills. This is the standard way land area is measured in property records and surveys.

One acre is 43,560 square feet, about 4,047 square meters, or roughly the size of 75% of an American football field. It is the most common unit for measuring land in the United States.

Can I copy my results?

Yes. Click Copy Coordinates to copy all your point locations to your clipboard. You can also use Print to print the full page with the map and all measurements, or Download Image to save the map as a PNG file.

What is the difference between area and perimeter?

Area is the amount of ground inside your boundary, measured in square units like acres or square feet. Perimeter is the total distance around the outside edge, measured in feet, meters, or miles. Area tells you how much land you have. Perimeter tells you how much fencing you would need to go all the way around it.

Why do the edge labels switch between feet and meters?

The edge labels follow your primary unit setting. If you pick a metric primary unit (m², km², or hectares), edges show in meters or kilometers. If you pick an imperial unit (acres, ft², yd², or mi²), edges show in feet or miles.

Can I save my drawn areas and come back later?

The tool does not save your work between visits. To keep your data, use Download KML to save the shapes as a file, Copy Coordinates to save the point list, or Print to make a paper or PDF copy before you leave the page.

What do the real-world comparisons mean?

The comparisons show your total area in terms of familiar things. For example, if it says "2.5 football fields," your land is about 2.5 times the size of an American football field. This helps you picture how big the land really is.

Math calculators

land area calculator

Updated Jul 13, 2026 By Jehan Wadia

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