Coordinate systems when uploading a .csv with point features

[JohnSolly1]

I am trying to upload a .csv to ArcGIS Online using 'Add Item' from my computer within the Content section of AGOL. Just wanted to make sure I understood what is going on under the hood. Does AGOL assume I am using a WGS 1984 datum? What if I uploaded coords in NAD83?

[KellyGerrow · Accepted solution]

AGOL assumes WGS84:

Publish hosted feature layers—ArcGIS Online Help | ArcGIS 

-kelly

[JackFanZhang]

Will ESRI ever consider including additional spatial reference system options for CSV data. There are many CSVs contain coord not in lat/long USNG, MGRS. for the users doesn't have anything to convert the coordinates, they have no way to upload the CSV file. Something I thought would be basic to include in ArcGIS Online/Enterprise to encourage non-GIS professionals to use the platform.