Zoom Levels
What is a Tile Matrix Set?
A Tile Matrix Set is a standardised way to divide the coverage of the service into a regularly spaced grid system made up of tiles (512x512 pixels).
By defining the tile matrix set for each coordinate reference system, we can ensure interoperability across different software, achieve accurate positioning with consistent behaviour, and improve performance.
EPSG:3857 Tile Matrix Set
The table below shows the resolution (meters per pixel) and scale of the zoom levels within the EPSG:3857 tile matrix set.
The zoom levels start at 6 to fit in with the industry standard initial zoom layer. This improves the interoperability of this tile matrix set with third party tools and applications.
6
1222.9924525628201
4367830.1877243574709
OpenData
7
611.49622628141
2183915.0938621787354
OpenData
8
305.748113140705
1091957.5469310893677
OpenData
9
152.8740565703525
545978.7734655446839
OpenData
10
76.4370282851763
272989.3867327723419
OpenData
11
38.2185141425881
136494.693366386171
OpenData
12
19.1092570712941
68247.3466831930855
OpenData
13
9.554628535647
34123.6733415965427
OpenData
14
4.7773142678235
17061.8366707982714
OpenData
15
2.3886571339118
8530.9183353991357
OpenData
16
1.1943285669559
4265.4591676995678
Premium data
17
0.5971642834779
2132.7295838497839
Premium data
18
0.298582141739
1066.364791924892
Premium data
19
0.1492910708695
533.182395962446
Premium data
EPSG:27700 Tile Matrix Set
The table below shows the resolution (meters per pixel) and scale of the zoom levels within the EPSG:27700 tile matrix set.
The zoom levels start at 0 rather than at 6 used for the EPSG:3857 tile matrix set, but the range of resolutions & scales is comparable. EPSG:27700 zoom level 0 is similar to EPSG:3857 zoom level 6.
0
3584
12799999.998
OpenData
1
1792
6399999.99899
OpenData
2
896
3199999.999496063
OpenData
3
448
1599999.9997480316
OpenData
4
224
799999.9998740158
OpenData
5
112
399999.9999370079
OpenData
6
56
199999.99996850395
OpenData
7
28
99999.99998425198
OpenData
8
14
49999.99999212599
OpenData
9
7
24999.999996062994
OpenData
10
3.5
12499.999998031497
OpenData
11
1.75
6249.9999990157485
OpenData
12
0.875
3124.9999995078742
Premium data
13
0.4375
1562.4999997539371
Premium data
14
0.21875
781.2499998769686
Premium data
15
0.109375
390.6249999384843
Premium data
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