In addition, the given scales assume that 256-pixel wide tiles are rendered and will be dependent on the resolution of the viewing monitor: these values are for a monitor with a 0.3 mm / pixel (85.2 pixels per inch or PPI). "~ Scale" is only an approximate size comparison and refers to distances on the Equator.These values for "m / pixel" are calculated with an Earth radius of 6372.7982 km and hold at the Equator for other latitudes the values must be multiplied by the cosine (approximately assuming a perfect spheric shape of the geoid) of the latitude. Values listed in the column "m / pixels" gives the number of meters per pixel at that zoom level for 256-pixel wide tiles. ![]()
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