Tool 02 · Area & perimeter

Parcel area and perimeter,
walked or typed in.

Walk the parcel with your phone, or type coordinates from an existing report. You get area in m², dunums and hectares, the perimeter, and the length and bearing of every edge — with no connection.

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2 input modes
3 area units
3 export formats
GeoKantar — parcel area and perimeter computation
Tool

What the tool does

Area is computed in the coordinate system you pick, so the number matches the official record rather than approximating it.

InputType E/N coordinates manually, or capture them by walking the site with GPS
GPS accuracyEvery point is averaged over several consecutive readings
Coordinate systemsGauss-Krüger zones 5, 6, 7 · WGS84
ResultArea in m², dunums and hectares · perimeter · length and bearing of each edge
PreviewThe parcel is drawn on the map live as you add points
StorageSaved parcels stay on the device and feed the other tools
ExportKML · CSV · DXF
Procedure

How to use it

01

Pick the coordinate system

This comes first, because every point is computed in it. The wrong system produces the wrong area — it is the one step you cannot skip.

02

Add points

Type E and N for each point, or stand on a boundary corner and capture it by GPS. Points connect in the order you add them.

03

Close the boundary

The last point joins back to the first automatically. Add them going around the boundary in order, so the edges do not cross.

04

Read the result

From the third point onward you get area and perimeter, with a breakdown table listing each edge's length and bearing.

05

Save or export

Name the parcel to keep it for subdivision, or export it straight to KML, CSV or DXF.

Details

Things that are easy to miss

Point order matters

Points connect in the order entered. Skip one and append it at the end, and the boundary crosses itself — the area comes out smaller than it should. The map sketch shows this immediately.

Why GPS readings are averaged

A single GPS fix can jump by several metres. The tool takes a run of consecutive readings and averages them, pulling the random error down. A sample counter shows how many readings have arrived.

Dunum, are, hectare

1 dunum = 1,000 m², 1 hectare = 10,000 m². All three units are shown at once, so nothing has to be converted by hand when writing the report.

Feeds into subdivision

A saved parcel appears in the Parcel subdivision tool without re-entry — same geometry, same coordinate system.

Questions

Frequently asked questions

Can I measure area without internet?

Yes. The phone's GPS receiver works without a mobile network, and the whole computation runs on the device. Internet is only needed if you want satellite imagery to load under the parcel.

What is the minimum number of points?

Three. With fewer than three there is no closed figure, so the tool lists the points without producing an area.

How accurate is a GPS walk-around?

It depends on the phone's receiver and sky visibility, typically a few metres per point. Averaging improves it, but cadastral accuracy still needs a survey-grade GNSS receiver — in that case use manual coordinate entry.

Is area computed on the projection or on the ground?

From coordinates in the chosen projected system, so on the projection. If you need the relationship to true ground distance, use the grid ↔ ground factor in the Localization tool.

Get GeoKantar

This tool ships inside the GeoKantar app. Available on the App Store and Google Play.

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