# Coordinate System and Using Custom Maps Verification

**URL:** <https://community.cesium.com/t/coordinate-system-and-using-custom-maps-verification/21763>\
**Category:** CesiumJS\
**Created:** [December 30, 2022, 10:29pm UTC](https://community.cesium.com/t/coordinate-system-and-using-custom-maps-verification/21763 "2022-12-30T22:29:21Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Jacob\_Metcalfe](https://sea2.discourse-cdn.com/cesium/user_avatar/community.cesium.com/jacob_metcalfe/32/11825_2.png) [@Jacob\_Metcalfe](https://community.cesium.com/u/Jacob_Metcalfe)\
**Post date:** [December 30, 2022, 10:29pm UTC](https://community.cesium.com/t/coordinate-system-and-using-custom-maps-verification/21763/1 "2022-12-30T22:29:21Z")

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Hello, I am using Cesium and wanted to ensure that the coordinate system used is WGS 84 with EPSG:4326 (Not Web Mercator). Is this the same for the globe and the 2D tiles? I am using the arcgis imagery provider with everything projected in 4326, just wanted to ensure that Cesium does not change this upon projection and that everything should project fine.