# Ebay Question - What is a 3" CD?

**URL:** https://forum.kirupa.com/t/ebay-question-what-is-a-3-cd/153228
**Category:** random
**Created:** [June 30, 2005, 1:17am UTC](https://forum.kirupa.com/t/ebay-question-what-is-a-3-cd/153228 "2005-06-30T01:17:59Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![kirupa](https://yyz1.discourse-cdn.com/flex011/user_avatar/forum.kirupa.com/kirupa/32/11616_2.png) [@kirupa](https://forum.kirupa.com/u/kirupa)
#### Post date: [June 30, 2005, 1:17am UTC](https://forum.kirupa.com/t/ebay-question-what-is-a-3-cd/153228/1 "2005-06-30T01:17:59Z")

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Hey everyone,  
Just wondering, what does it mean when something is in 3" CD format? Is that the same as a regular CD? I’ve never encountered the 3" terminology before, so I’m hoping somebody here knows.

I don’t want to end up bidding on eBay for some bizarre format that I can’t use.

Thanks!  
Kirupa :beam: