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 :

 Search 

Area Output

0 m²
0 km²
0 Acres
0 Hectares
0 Feet²

Perimeter Output

0 m
0 km

Options

 Delete Last Point 

 Delete All Points 

 Start a New Area 


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

Read KML (Beta)

Upload KML File:

 Upload 

Instructions

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

Information

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

Benchmarks

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

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

Previous Comments For This Page

Excelente Herramienta, muy util
By Jesús on 30/07/2015

Hi, sorry, please try Alt n for a new area.
By Free Map Tools on 27/07/2015

Months ago, I suggested implementing hotkeys especially for new measurments, and you were kind enough to do it the next day I see, yet "Ctrl A" is reserved for "Select All" by Windows I guess. Good luck.
By kash on 26/07/2015

Hi EFREN, can you explain your problem in more detail please? I don't quite understand.
By Free Map Tools on 21/07/2015

THANKS, BUT IN THE LAST CONSULT IMAGEN IS NONE, CAN YOU HELP ME? IS THERE A PROBLEM? OR CONFIGURATION
By EFREN on 21/07/2015

GRACIAS
By MAP FINCA JUYAMAYA on 20/07/2015

MUY BUENO ME AYUDO MUCHO
By FREDDY on 20/07/2015

Fantastic, exactly what I was looking for
On 19/07/2015

14.1 ac
On 17/07/2015

muy bueno!
By seba on 17/07/2015

ALGUIEN ME PUEDE AYUDAR? DESEO TRASLADAR EL ÁREA CALCULADA ELEGIDA AL AutoCAD... Gracias
By DANTE on 14/07/2015

This was EXACTLY what I was looking for. Thank you really much for putting the time and effort required to make this website. Cheers!
On 14/07/2015

HP, you can save the map by using the [User Menu] at the top right of the page.
By Free Map Tools on 07/07/2015

Great tool, but two suggestions: It would be helpful if we could save the maps we create. Also, it would be good if one could right click and remove specific markers.
By HP on 05/07/2015

excelente herramienta gracias
By miguel on 26/06/2015

good!!
By know on 26/06/2015

Hi, please try Measure Distance on a Map for linear distances.
By Free Map Tools on 25/06/2015

Could you provide linear distances between points?
On 25/06/2015

muchas gracias por tan excelente herramienta como la como la exporto a Autocad y civil
By Edgar Gomez on 24/06/2015

Excelente página de ayuda para consultar áreas y longitudes!!! que gran idea!!! el uso de la tecnología al servicio del hombre, Gracias!!
By luis ortiz on 24/06/2015

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