This planimeter tool can be used to measure the enclosed area of a defined polyline on a map.
Measure an Area
Read KML (Beta)
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.
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
- 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
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 MartÝn Mendoza
By Emanuel Alarc├│n 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.
By Programador free on 11th May 2017
By Ken Staude on 9th May 2017
Nice map tool dudes
By Bowzer on 9th May 2017
non riesco pi¨ 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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