Area Calculator

This planimeter tool can be used to measure the enclosed area of a defined polyline on a map.

Measure an Area

Search For Location :


Area Output

0 m²
0 km²
0 Acres
0 Hectares
0 Feet²

Perimeter Output

0 m
0 km


 Delete Last Point 

 Delete All Points 

 Start a New Area 

Show Markers?
Transparent Fill Colour?
[Map Height : Small - Medium - Large - Full Screen]

Read KML (Beta)

Upload KML File:



To use the area calculator tool:

  • Zoom and pan the map to find the area of interest
  • Click on the map to place a vertices for the polyline
  • Click as many time as necessary to define the polyline

The area enclosed will them be output in square meters and square kilometers

You can click the [Delete Last Point] button if you make a mistake or click [Clear All] points to remove all points from the map and start again.

You can also reposition the markers after they have been placed on the map by dragging and dropping them.


The area calculator tool allows you to find out the area that is enclosed inside a closed polyline overlaid on a map.


Lough Neagh

A measurement of Lough Neagh in Northern Ireland. Lough Neagh is reported to have a surface area of 388 km˛ [1] , so the reading of 380 823 442m² isn't far off.

Future Uses and Ideas

  • Allow the user to change the colour of the polylines and area shading (including transparent)
  • Allow the area to be saved for later use

Version History

  • 23rd March 2014 - Added Hectares output
  • 6th August 2013 - Issue with perimeter output fixed
  • 21st February 2013 - Added square feet output
  • 8th January 2012 - Upgraded to Google Maps API V3 and some new features
  • 20th July 2010 - Added crosshairs and option to switch on/off crosshairs
  • 17th June 2010 - Added upload KML option (beta)
  • 2nd June 2010 - Moved the scale control to the top of map to stop conflict with Google Search bar
  • 2nd February 2010 - Added perimeter output in meters and kilometers
  • 25th March 2008 - Draggable markers, ability to click inside polygon and output in acres added
  • 26th June 2007 - Basic area calculation added
  • 24th June 2007 - Page created

Previous Comments For This Page

By REZZA on 21/10/2014

This is the approximate land
By Korimerla 28 on 20/10/2014

excelente herramenta
On 18/10/2014

muy bueno
On 18/10/2014

como puedo ver las coordenadas en el mapa
By saul on 18/10/2014

Area del plan
By El plan on 17/10/2014

On 17/10/2014

Fenomenal, la considero muy útil.
On 16/10/2014

Fazenda Santa Cruz
On 16/10/2014

By MARWA JAMES on 09/10/2014

By jlopez on 08/10/2014

buena herramienta,felicitaciones. saludos
By sofia on 08/10/2014

horrible. Muy impreciso.
On 06/10/2014

By ALBIAFA on 04/10/2014

muy buena gracias
By ingeniero on 01/10/2014

muchas gracias fue de ayuda
By alfredo sossa on 30/09/2014

Thank you for creating this.
On 29/09/2014

I love it. I use it all the time...
On 28/09/2014

Site plot doctor land
By Angkor Park Lodge on 27/09/2014

muy bueno, gracias
By Mario on 27/09/2014

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