Is there a way to download a Kindle book to my PC and convert it to a .pdf  format so that I can read it on my Nook?

I have heard that the free Calibre software will do it, but I haven't done it myself.

As long as it is not DRMd, Calibre should convert it.  I haven't tried it with a Kindle book so I don't know if they have DRM in them.

thanks.  I'll try that and see.

how can you tell if it's drm'd ahead of time? I did a couple from b&n and they were drm'd dangit...

I don't know Susanna.  I downloaded some in the wrong format from allromanceebooks.com and couldn't convert them because of the DRM.  I didn't see any warning that they had the DRM.

I emailed their customer service and explained my problem.  They were fantastic and allowed me to re-download the ebooks in a different format.  That format of the books was not DRMed.  Why one format would be and another one not, I don't know.

Susanna -  you have a Nook right?   Anything from bn.com shouldn't matter on your nook.

nope no Nook yet..I have the Sony prs505

I don't think you can convert it to a pdf, but you could probably convert it to epub (via Calibre) and put it on the Nook that way. 

thanks Jilian

I am under the impression that all or most e-books on amazon and b&n are drm'd.  From both sources you can download to read on your pc, iphone, ipad & whatever other devices they list.  mobileread has a lot of folks who say they never buy drm'd, they can probably give advice on where to get them and how to tell.