Radius Around Point
You can use this tool to find the radius around a point on the map. First type in the radius required in kilometers or miles and then click on the map at the center of where you wish the circle to appear. You can then create as many radii as you wish.
Radius Around Point Map
- Type in a radius required in the text box above.
- [Zoom and Pan to find the required area on the map then click on the map to draw a circle] OR [Type a location into the text box and click Draw Radius] OR [Input the latitude and longitude of the location in decimal format].
- Click as many times as necessary to draw multiple circles.
- You can use the [Clear Map] button to erase all markers and radii and start again.
Use the "URL to last radius" text box to find a URL that will show the most recent radius on this page when opened in a web browser. This URL can be sent to anyone if you wish to forward it on.
Google Earth KML Output
You can now export all the drawn radii on the map to Google Earth for improved display and printing. You must have Google Earth installed (or another application capable of importing KML files). You need to have a radius displayed on the map before the output will work. Please report any bugs.
The procedure to Export to KML is as follows:
- Draw one or more radii on the map as you see fit
- Once ready, click the [Generate KML] button. You will probably need to scroll down the page to find this!
- After a short delay, a blue hyperlink will appear below the button that reads [Download KML File Here]
- Click the hyperlink to download the KML file to your local machine
- You can then open the KML file in application such as Google Earth
Currently, the KML will include:
- The same radius size and shape
- Transparency of 50%
It will not include:
- Shading colour (blue only, but you can change this once it is loaded into Google Earth)
- Line colour (you can change this once it is loaded into Google Earth)
- Line thickness (you can change this once it is loaded into Google Earth)
These features may be added later depending on feedback.
The CSV option allows you to upload bulk points to the map. To do this you must format your points using the convention of latitude,longitude,radius per line where latitude and longitude are in decimal format and radius in km. Make sure to strip out any whitespace. You can upload as many lines as you wish, however more lines will take more time and every web browser will have its limits on the maximum number of lines (hence circles drawn) before things slow to a halt.
..should add two radii around the Olympic stadium in London for 10km and 15km
- Allow annotation for labeling the radius center point
- Allow annotation for the radius distance
- Provide more colours
- 4th May 2015 - Update to allow a resize after using method 2 or 3 to recalculate the Radius Distance
- 7th May 2013 - 2 new options added : URL loads full screen? AND URL loads unclickable map?
- 13th January 2013 - Label on marker now displays radius. You can now annotate markers.
- 15th February 2012 - Updates to layout of options
- 8th January 2012 - Added search for location text box
- 7th January 2012 - Resolved issue where the specified fill colour was not used if the draw by address or latitude/longitude was used
- 22nd December 2011 - Added full screen option. Fixed issue when dragging the centre point of a smaller radius
- 15th September 2011 - Added option to upload CSV text for bulk upload of multiple points
- 13th June 2011 - Fixed issue with clear fill having the same colour as the previously selected colour
- 7th June 2011 - Option to hide the resize grip
- 3rd June 2011 - Radii can now be resized while onscreen
- 23rd May 2011 - Radii can now be clicked to be drawn inside an existing radius
- 10th May 2011 - Static map output now uses Google Static Maps API V2. No key required. Will not output an URL > 2048 characters
- 9th May 2011 - Fixed issue with clear fill having a grey shade
- 15th April 2011 - Allow the last radius to be deleted (not just all at once)
- 3rd February 2011 - Export to KML now copes with multiple radii
- 20th January 2011 - Circumference and area now also output in miles and acres
- 29th December 2010 - Click on a marker to delete it
- 29th December 2010 - Allow markers to be dragged
- 29th December 2010 - Converted to Google Maps API V3
- 2nd June 2010 - Moved the scale control to the top of map to stop conflict with Google Search bar
- 27th January 2010 - Added Google Earth KML Output
- 13th October 2009 - Overlapping radii now supported
- 29th September 2009 - Added Google Search Bar to map. Added radius display on marker when you hover over the marker
- 24th September 2009 - Added URL to last radius function
- 17th September 2009 - Added Google Maps Static API Image Output
- 3rd January 2009 - Added latitude and longitude input option
- 29th September 2008 - Added clear fill option
- 9th September 2008 - Added Place radius by location name option and reworked some other functions
- 21st January 2008 - Improved circle reliability and added fill colour
- 15th October 2007 - Added area and circumference output
- 25th September 2007 - Added different colour's, change thickness, show/hide center marker, change map height and print the page
- 13th September 2007 - Now works with IE
- 22nd July 2008 - Added option to use miles as radius input
- 30th June 2007 - Clear Map button added
- 29th June 2007 - Page created with basic functionality
Previous Comments For This Page
30 miles from the ldmc and tvrh
By 30 miles radius on 07/10/2015
SMG Ortho Sports Medicine Center 10 Mile Radius Map
By Diana San Antonio on 06/10/2015
Good Tool -
ist it possible to insert a google access key?
By Bernd on 29/09/2015
Alex, there is a lag between GM site and these maps provided via the Google Maps API. It does seem to vary depending on location. There is no set rule as far as I am aware about the lag in the update and how often they occur.
By Free Map Tools on 29/09/2015
The map is so outdated compared to the actual Google Maps site. Why is this?
By Alex on 28/09/2015
Bill, there is currently only one colour of marker to use.
By Free Map Tools on 22/09/2015
Dan, It seems to cover Patten when tested ... http://tinypic.com/r/2aeo4n8/8.
By Free Map Tools on 22/09/2015
this is awesome!
I haven't gone through all 1400 comments, but I was hoping you have a way to plot a perimeter around an area. For example, Atlanta, GA has "the perimeter" highways that encircle the city, I need the area 10 miles outside that perimeter.
By Jason Burnett on 17/09/2015
Great tool thanks. On my wish list would be to generate a list of the cities and towns within that given radius selected. If I missed it then I apologize in advance. Cheers!
By Travtek on 17/09/2015
Dan, 9.4 miles is 15.12km. I use this page with kilometers and it works fine. Multiply miles by 1.609 to get your kilometers.
I don't think it's very accurate unless I'm doing something wrong. For example: On Google Maps in another window I get directions from Sherman, ME to Patten, ME. It shows "9.4" Miles (And that's road miles). Now when I use this map and put in a 10 mile radius around Sherman, it doesn't come close (And those are are miles which go out further than road miles). I put a 12 miles radius, still not enough. I had to put a 15 mile radius around Sherman for it to include Patten. Can anyone (logically) explain this??
By Dan on 11/09/2015
The Colours and Line Thickness do not seem to make a difference.
Is there a way to change the Color of the markers? To allow showing two different types of locations on the map.
By Bill on 11/09/2015
Douglas, please have a look at http://www.mathopenref.com/coordcirclealgorithm.html
By Free Map Tools on 10/09/2015
Hello People !
Can someone tell me what is the formulation to draw that circle by using latitude, longitude and given radius ? I need to put in to excel for my study. I would be aprreciated !!!
By Douglas on 08/09/2015
Great great tool. Currently using it for world building in a fantasy DnD game. Great for understanding realistic distances and to be able to compare to real-world examples. Thanks!
By Alice on 03/09/2015
Great tool, saves me hours.
Lyle, import to google earth, file, save, jpg.
By George on 01/09/2015
I'd really like to be able to easitly print the circle to a PDF or printer or save as a JPG. I can do it, but it's a bit cumbersome.
By Lyle on 26/08/2015
It uses air miles.
By Free Map Tools on 26/08/2015
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