Area Calculator

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

[11th July 2018] Unfortunately, due to a large price increase in back-end services, we can no longer offer some features on this page.

Measure an Area

Click Here To Load The Map

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?
Show Crosshairs?
Transparent Fill Colour?
[Map Height : Small - Medium - Large

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.

To draw a new area click the [Start a New Area] button or press Alt+n


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 km² [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
  • Export to KML option

Version History

  • 17th June 2015 - Markers now show their lat/lng when you hover over them
  • 18th December 2014 - Total area is now calculated
  • 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

Comments For This Page

The perimeter output says meters but seems more consistent with feet, which is better for me. Also, most addresses don't come up but I am able to just zoom and search. So helpful thank you for making this available.
By Michael Wells on 4th September 2018

Hi Donna, it is still available. Just click on "Load the Map" to get going...
By Free Map Tools on 24th August 2018

So sorry the area map is no longer available. I've not come across anything like it. I will miss it.
By Donna Green on 22nd August 2018

I wanted to know our country diamension map per each reqion. or how bigs is each reqion in the map
By jcen on 21st August 2018

Is was/is a good soft ware for leaning
By Sincalire on 20th August 2018

Extremely useful to me as a surveyor. I can calculate plot size very easily and accurately enough for use in reports. I use the distance between tool several times every day.
By Nick Pope on 20th August 2018

By PEDRO on 15th August 2018

very excellent software but disappointed to hear about it has been stopped its services.
By satish on 10th August 2018

es una pena, era una herramienta que la utilizaba regularmente pero ya no funcion
By José on 7th August 2018

Thankyou for this software , it is great for estimating house sizes and land sizes.
By Suz. on 3rd August 2018

This is brilliant & saved me some taxes: I was able to prove that my taxed acreage was less than the IRS was attempting to charge me -- THANKS !
By Old Yorkshireman on 26th July 2018

i punch in zip code for a city in US and it takes me to france
By gary on 18th July 2018

ÁLVARO, can you confirm what is not working please? Can you try deleting your temporary internet files and load the page again?
By Free Map Tools on 17th July 2018

It is necessary to enable the calculation of areas. Please.
By ÁLVARO REYES on 16th July 2018

On 11th July 2018

excellente software
By jair on 3rd July 2018

Hands %uD83D%uDE09 Down The Best App I've Used For My Property Ventures.
On 14th June 2018

Excellent service!... I solved my problem with a map in this page. Im very greatfull with you.
By Cristian Villegas on 13th June 2018

Hi, allow to user click (multiple times) on map and colour measure, whole countries within existing boundaries. In addition allow to move with such coloured areas (adjust boundaries and/or move with whole coloured parts od map).
On 6th June 2018

Best apps
By Raju on 4th June 2018

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