One degree of longitude at the equator = 69.2 miles. As you go North or South, one degree of longitude decreases in size as the latitude increases. The Width Compressor factor indicates how much a map distance at the equator should be shrunk or compressed for the given latitude. |
|
|
Degree |
Width |
Height |
|
Latitude |
= Miles |
Compress |
Expand |
|
|
|
|
|
|
0 |
69.2 |
1.00 |
1.00 |
|
5 |
68.9 |
1.00 |
1.00 |
|
10 |
68.1 |
0.98 |
1.02 |
|
15 |
66.8 |
0.97 |
1.04 |
|
20 |
65.0 |
0.94 |
1.06 |
|
|
|
|
|
25 |
62.7 |
0.91 |
1.10 |
|
26 |
62.2 |
0.90 |
1.11 |
|
27 |
61.7 |
0.89 |
1.12 |
|
28 |
61.1 |
0.88 |
1.13 |
|
29 |
60.5 |
0.87 |
1.14 |
|
30 |
59.9 |
0.87 |
1.16 |
|
31 |
59.3 |
0.86 |
1.17 |
|
32 |
58.7 |
0.85 |
1.18 |
|
33 |
58.1 |
0.84 |
1.19 |
|
34 |
57.4 |
0.83 |
1.21 |
|
35 |
56.7 |
0.82 |
1.22 |
|
36 |
56.0 |
0.81 |
1.24 |
|
37 |
55.3 |
0.80 |
1.25 |
|
38 |
54.6 |
0.79 |
1.27 |
|
39 |
53.8 |
0.78 |
1.29 |
|
40 |
53.1 |
0.77 |
1.30 |
|
41 |
52.3 |
0.76 |
1.32 |
|
42 |
51.5 |
0.74 |
1.34 |
|
43 |
50.7 |
0.73 |
1.36 |
|
44 |
49.8 |
0.72 |
1.39 |
|
45 |
49.0 |
0.71 |
1.41 |
|
46 |
48.1 |
0.70 |
1.44 |
|
47 |
47.3 |
0.68 |
1.46 |
|
48 |
46.4 |
0.67 |
1.49 |
|
49 |
45.5 |
0.66 |
1.52 |
|
50 |
44.5 |
0.64 |
1.56 |
|
51 |
43.7 |
0.63 |
1.58 |
|
52 |
42.7 |
0.62 |
1.62 |
|
53 |
41.8 |
0.60 |
1.65 |
|
54 |
40.8 |
0.59 |
1.69 |
|
55 |
39.8 |
0.58 |
1.74 |
|
|
|
|
|
60 |
34.7 |
0.50 |
1.99 |
|
65 |
29.3 |
0.42 |
2.36 |
|
70 |
23.7 |
0.34 |
2.92 |
|
75 |
18.0 |
0.26 |
3.84 |
|
80 |
12.1 |
0.17 |
5.72 |
|
85 |
6.0 |
0.09 |
11.53 |
|
90 |
0.0 |
0.00 |
~~ |
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