# projection

**Projections** are methods of transforming the coordinates of locations on a three-dimensional planet to a two-dimensional plane.

Mapbox GL JS supports displaying maps in the following projections:

**Globe**: A view of Earth from space**Equal-area projections**: Relative size of areas is accurate, but shapes are distorted**Conformal projections**: Shapes and angles are accurate, but sizes are distorted- Web Mercator, the default
- Lambert conformal conic

**Compromise projections**: A balance of size and shape distortion

Learn more about the uses of each in the Mapbox GL JS projection guide.

Mapbox tools accept coordinate inputs as follows:

- Mapbox Tiling Service and Mapbox SDKs for mobile and web accept GeoJSON that follows the GeoJSON standard for a geographic coordinate reference system equivalent to OGC:CRS84, using the WGS84 datum, decimal degrees, and longitude and latitude units (in that order).
- The Mapbox Uploads API accepts data inputs in a variety of formats and projections.

Note on EPSG:4326

Later versions of the EPSG:4326 coordinate reference
system order coordinates as `latitude,longitude`

, which is the reverse order
of coordinates in OGC:CRS84. Most Mapbox upload tools require coordinates
ordered as `longitude,latitude`

.

**Related resources:**

- Uploading data getting started guide
- Adaptive projections in Mapbox GL JS
- Example: Use different map projections for web maps
- Map projection Wikipedia page
- Web Mercator Wikipedia page

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