EPSG Geodetic Parameter Dataset
Version: 9.8.4
EPSG Geodetic Parameter Registry
Version: 9.8.4
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Projected CRS
Name WGS 84 / Pseudo-Mercator VALID
Aliases Alias Naming System Remarks
WGS 84 / Popular Visualisation Pseudo-Mercator EPSG alias
Web Mercator EPSG alias
Scope Certain Web mapping and visualisation applications. It is not a recognised geodetic system: for that see ellipsoidal Mercator CRS code 3395 (WGS 84 / World Mercator).
Remarks Uses spherical development of ellipsoidal coordinates. Relative to WGS 84 / World Mercator (CRS code 3395) errors of 0.7 percent in scale and differences in northing of up to 43km in the map (equivalent to 21km on the ground) may arise.
Area Description World between 85.06°S and 85.06°N.
Derived From Base CRS Name WGS 84
Base CRS Type geographic 2D
Geodetic Datum World Geodetic System 1984    —    Alias(es): [WGS 84]
Prime Meridian Greenwich
Ellipsoid WGS 84    —    Alias(es): [WGS84]
Semi-Major Axis (a) 6378137 metre
Inverse flattening 298.257223563 unity
Map Projection Name Popular Visualisation Pseudo-Mercator    —    Alias(es): [Pseudo-Mercator]
Operation Method Popular Visualisation Pseudo Mercator
Is the operation reversible? Yes
Conversion Parameters Parameter Name Parameter Value or Parameter File Unit of Measure Sign Reversal
Latitude of natural origin
degree No
Longitude of natural origin
degree No
False easting 0 metre No
False northing 0 metre No
Coordinate Axes Order Axis Name Abbrev. Unit of Measure Orientation
1 Easting X metre east
2 Northing Y metre north