Feet-Degrees Relation

[capers19]

114 feet equals how many degrees (or decimal point)? What is formula?

[+webscouter.]

That depends,

 

North/South is going to be the same no matter where you are, about 6 feet per thousands of a degree. (Last digit on your gps)

 

But East/West gets smaller the closer you get to the poles. At the equator they are farther apart than they are say in Florida.

 

So to answer your question we would need to know where the point is located and what direction you are travelling.

[+dfx]

since he's asking for a forumla:

 

the circumference of the earth on the equator is 40,075.16 km and over the poles is 40,008 km. the median is 40,041.6 km, which is good enough for rough calculations.

 

therefore one degree in N/S direction is 111.23 km and one minute is 1.85 km.

 

for E/W direction, you take that number and multiple it with the cosine of the latitude. for example, if you're at 47 degrees north, the cosine of 47 degrees is about 0.682 and therefore one degree in E/W direction would be 75.86 km and one minute would be 1.26 km. at 27 degrees north you'd have 99.1 km per degree. so the formula is: 111.23 km * cos(latitude)

 

of course those are rough approximations only and the numbers will get more skewed the longer the distance is.

[+ecanderson]

114 feet equals how many degrees (or decimal point)? What is formula?

In Florida, you can estimate 0.001 minutes = 6' N/S, 4' E/W. Close enough. So N/S, it's about 0.019, and E/W it's about 0.029.

 

If your 114' is a mix of N/S and E/W, the formula above applies.

Edited July 20, 2010 by ecanderson

[+Redwoods Mtn Biker]

This is why God made UTM. ;-)

[xyzee]

Also check out:

 

http://home.online.no/~sigurdhu/Grid_1deg_Imp.html

 

It's from gpsinformation.net>geography>Earth: According to WGS 84

[Grasscatcher]

This is why God made UTM. ;-)

 

Yes RMB, but don't tell EVERYONE how easy it is to use UTM, 'cause "they" will use up all the Northing and Easting numbers and then we won't be able to tell where we are....totally lost out here in never never land!

 

Never having to convert or guesstimate....

[Suscrofa]

This is why God made UTM. ;-)

 

NO ! UTM is metric, metric is french, french is evil, metric is evil, UTM is evil !

[Grasscatcher]

FORGET Metric vs English......forget Meter vs Yard/Feet....

 

For every digit that the coordinates differ for a specific location....that's approximately one pace / step.

 

And only two directions....East and North.... either more East or less East and the same for North.

 

Works fer me !