Is This Content Helpful?
We're glad to know this article was helpful.
When using the Buffer Wizard in ArcMap to buffer points, the output buffers are not round.
By default, the ArcMap Buffer Wizard uses a temporary Hotine oblique cylindrical projection to calculate buffers. This projection is only appropriate for a small buffer radius of less than five miles and at low latitudes. When using a large buffer radius or buffering data at high latitudes, this default projection is unsuitable.
Geometrically correct buffers will appear as ovals if the ArcMap Data Frame is set to a Geographic Coordinate System (GCS).
Use the AdvancedArcMapSettings utility to change the default projected coordinate system used when buffering.
For detailed information about the Buffer Wizard, access the link below to the Esri Mapping Center:
The Buffer Wizard in ArcMap
Coordinate system of the feature class (input)
Coordinate system of the data frame (output)
To create geometrically correct buffers using the (input) option, the DATA must be projected to an Equidistant projection.
To create geometrically correct buffers, using the (output) option, the ArcMap Data Frame must be projected to an Equidistant projection.