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

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

Very helpful tool. Thank you
On 18th April 2024

awesome tool
On 13th April 2024

hello, any way this could have an addition option to type in an external co-ordinate/waypoint? part of the area drawn
On 13th April 2024

best tool for area and elevation measurement
On 27th March 2024

thank you team
By Sam on 25th March 2024

great tool
On 21st February 2024

Paris France
On 11th December 2023

Great Site tool
By Franz on 27th October 2023

On 9th October 2023

Good job
By Carding on 3rd October 2023

Very ggod
By Mike on 25th September 2023

land area used by parking lots - Cisco Tech Campus
On 17th September 2023

Excellent site use it all the time to gauge field sizes
On 14th September 2023

perfect measurement, excellent service
By Shunya on 29th August 2023

Very helpful!
By L w on 19th July 2023

Show plot
On 18th July 2023

road side land selling village land
By chhattishgarh dhamtari parasta on 14th July 2023

You've given me the answer to a question the Estate Agent couldn't be bothered to find. Many thanks
By Willum on 5th July 2023

I love it
On 15th June 2023

exelente paguina muchas gracias por compartirla, Bendiciones
By Marvin B on 14th June 2023

Showing the most recent 20 out of 1441 comments. Click to see all the comments.

Add your own comment below and let others know what you think:


Your Name (optional)