How to make flat faces rounded?

[beckmx14]

hello guys, I was wondering how to make flat faces rounded or with radius, a little more like fillet but for faces, for instance if I extrude a box, how can I make that extruded face rounded, I am attaching what I have with my flat faces and an example of what I would like or what I mean with "round faces"

[TheCADWhisperer]

File>Export and then Attach *.f3d file here.

[beckmx14]

this is the file

[wmhazzard]

You can sketch on the XZ plane and project the body, then sketch an arc like you want then sweep it around the outside to join to your body. But first you have to fix your original sketch, otherwise the sweep won't work. You need dimensions and tangent constraints between the circles and lines then delete the bottom fillet. I have no idea what you want to do with the lid but it would be best to delete it and start over for it. 

In the future, please embed any photos instead of attaching them. 

[Johnc911]

Here's another way you might find useful to add to your toolbox.

https://autode.sk/2tcOCJp

[jmyler]

This saved me. Thank you for posting this. Never used these features before.