# Longitude & Latitude to Miles/Kilometers

**URL:** <https://boards.straightdope.com/t/longitude-latitude-to-miles-kilometers/531885>\
**Category:** Factual Questions\
**Created:** [March 9, 2010, 6:38pm UTC](https://boards.straightdope.com/t/longitude-latitude-to-miles-kilometers/531885 "2010-03-09T18:38:30Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![HeyHomie](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/heyhomie/32/207_2.png) [@HeyHomie](https://boards.straightdope.com/u/HeyHomie)\
**Post date:** [March 9, 2010, 6:38pm UTC](https://boards.straightdope.com/t/longitude-latitude-to-miles-kilometers/531885/1 "2010-03-09T18:38:30Z")

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My Google-fu is failing me.

Is there some resource on the web that converts Longitude & Latitude coordinates into distance in miles/kilometers? As in “W39.58785 N38.44568 is X miles and Y kilometers from E11.77889 S44.55859”?

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**Author:** ![JerseyFrank](https://avatars.discourse-cdn.com/v4/letter/j/bcef8e/32.png) [@JerseyFrank](https://boards.straightdope.com/u/JerseyFrank)\
**Post date:** [March 9, 2010, 6:44pm UTC](https://boards.straightdope.com/t/longitude-latitude-to-miles-kilometers/531885/2 "2010-03-09T18:44:38Z")

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This is natively supported in the Google Maps API. Not sure if that really helps you though.

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**Author:** ![Khendrask](https://avatars.discourse-cdn.com/v4/letter/k/3e96dc/32.png) [@Khendrask](https://boards.straightdope.com/u/Khendrask)\
**Post date:** [March 9, 2010, 6:46pm UTC](https://boards.straightdope.com/t/longitude-latitude-to-miles-kilometers/531885/3 "2010-03-09T18:46:40Z")

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Calculator: [http://www.nhc.noaa.gov/gccalc.shtml](http://www.nhc.noaa.gov/gccalc.shtml)  
And the ‘more info link’: [http://williams.best.vwh.net/avform.htm](http://williams.best.vwh.net/avform.htm)

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**Author:** ![Waffle\_Decider](https://avatars.discourse-cdn.com/v4/letter/w/77aa72/32.png) [@Waffle\_Decider](https://boards.straightdope.com/u/Waffle_Decider)\
**Post date:** [March 9, 2010, 7:20pm UTC](https://boards.straightdope.com/t/longitude-latitude-to-miles-kilometers/531885/4 "2010-03-09T19:20:08Z")

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I like the Great Circle Mapper. It both calculates the distance and displays the result on a map. It accepts input in both lat/long and IATA/ICAO airport identifiers.

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**Author:** ![JoelUpchurch](https://avatars.discourse-cdn.com/v4/letter/j/f05b48/32.png) [@JoelUpchurch](https://boards.straightdope.com/u/JoelUpchurch)\
**Post date:** [March 9, 2010, 8:16pm UTC](https://boards.straightdope.com/t/longitude-latitude-to-miles-kilometers/531885/5 "2010-03-09T20:16:05Z")

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Wolfram Alpha has this as one of the built in functions:

[http://www.wolframalpha.com/examples/GeodesyAndNavigation.html](http://www.wolframalpha.com/examples/GeodesyAndNavigation.html)

I keep WA calculator on my iGoogle start page.