Total Area Output

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

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

Great tool, a little tricky to see where you are moving a point to though.
On 24th June 2017

le agradesco a esta pagina es muy buena
By byron andres on 22nd June 2017

No, it assumes a flat earth for calculations.
By Free Map Tools on 19th June 2017

Does this take contours into consideration?
On 18th June 2017

do you know about laboratory instruments used to measure area?
By lovely jane on 13th June 2017

Eucalo, can you send the KML file you are uploading?
By Free Map Tools on 5th June 2017

Subo el area pero no calcula nada
By Eucalo on 2nd June 2017

Mircea, to share an area:
User Menu (top right of screen) > Save Area
Give it a name
User Menu > Load Area
Click the link icon
You should then see a link that you can share with others

By Free Map Tools on 30th May 2017

How do I share an area?
By Mircea on 30th May 2017

Perimeter Parque General San Martín Mendoza
By Emanuel Alarcón on 20th May 2017

Bernard, please get in contact to discuss.
By Free Map Tools on 20th May 2017

Is this solution available for download or purchase?
By Bernard on 19th May 2017

Now it works again, Great program!
By Ryan on 16th May 2017

Es mas o menos lo que estaba buscando, pero yo quiero es que me de un rango de latitud y longitud de esa area, para luego evaluar si es que alguien esta alli o no y segun eso hacer una u otra cosa. Gracias..
By Programador free on 11th May 2017

6.513 acres
By Ken Staude on 9th May 2017

Nice map tool dudes
By Bowzer on 9th May 2017

non riesco più ad entrare dal primo maggio 2017
By Giorgio on 3rd May 2017

Please reload the page using Shift + F5 (Windows) or ⌘ + Shift + R (Mac) and see if it loads OK then?
By Free Map Tools on 2nd May 2017

Still doesn't work for me
On 2nd May 2017

The search now tries to find a location if you press enter/return straight after typing.
By Free Map Tools on 2nd May 2017

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