Grid Square Conversion
(and distance calculation) by DK3VN

Last Update: 1-January-2013

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home This pages is hosted on: http://home.arcor.de/waldemar.kebsch/The_Makrothen_Contest/
If you don't know your locator, then figure out your position (Latitude/Longitude) with your smartphone. There are free Apps available also, converting your position into a locator. Just search i.e. in the App-Store for "HAM RADIO" and/or for "MAIDENHEAD".

Or you have to find out the position of your QTH on a good map: Latitude North/South, and Longitude West/East. Just check out this Web-Page from Laurent F6FVY.

Also you can convert a known Locator to Latitude and Longitude here.

To calculate the distance between two locators go to the bottom of this page.

Use this form, if you know the Latitude and Longitude in Degrees and fractions of a Degree.
  Latitude Deg N S       Locator
Longitude Deg W E
Use this form, if you know the Latitude and Longitude in Degrees, Minutes and fractional Minutes.
  Latitude Deg Min N S       Locator
Longitude Deg Min W E
Use this form, if you know the Latitude and Longitude in Degrees, Minutes and Seconds.
  Latitude Deg Min Sec N S       Locator
Longitude Deg Min Sec W E
Use this form to calculate the distance between two locators. Enter the source and the destination locator or select a DX or call area as source or as destination. This calculation is based on the assumption the earth is a perfect sphere with a radius of 6378.16 km.
Source
  Src Loc     Distance km   Heading < Src to Dest Deg
Dest Loc Dest to Src
Destination
A small part of the code is from Stefan, DC8SB. I have the code conciderably modified and expanded.
© 2013 Waldemar Kebsch DK3VN