anandthakker/cheatsheet.md

Created June 8, 2016 14:46

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Raw

    

Zoom
Tile size at equator (km)
Resolution at equator (m)


0
22568
88155

1
11284
44078

2
7656
29904

3
4577
17881

4
2443
9544

5
1244
4861

6
625
2442

7
313
1223

8
157
611

9
78
306

10
39
153

11
20
76

12
10
38

13
5
19

14
2
10

15
1.22
5

16
0.61
2

17
0.31
1.19

18
0.15
0.60

19
0.08
0.30

20
0.04
0.15

21
0.02
0.07



  

Zoom	Tile size at equator (km)	Resolution at equator (m)
0	22568	88155
1	11284	44078
2	7656	29904
3	4577	17881
4	2443	9544
5	1244	4861
6	625	2442
7	313	1223
8	157	611
9	78	306
10	39	153
11	20	76
12	10	38
13	5	19
14	2	10
15	1.22	5
16	0.61	2
17	0.31	1.19
18	0.15	0.60
19	0.08	0.30
20	0.04	0.15
21	0.02	0.07

almccon commented Jun 9, 2016

My go-to resource: http://wiki.openstreetmap.org/wiki/Zoom_levels

Shouldn't the tile width at zoom 0 be the circumference of the earth? That's about 24,901 mi or 40,075 km. Your number looks more like it's in miles. Or are you measuring the height of the tile? But then the height should be less than half of the width in real-world units, since it's going only to 85º N and S.