What size condoms do I need?

Your penis is around the average length and so most condoms will fit quite well . The issue with some guys is thickness of the shaft . . Mine is thicker than average and although it is 6 inches I usually prefer the bigger condoms to make sure its not overly tight . My advice is try a few different types and find the one that you feel comfortable using 

the average penis size is 5-7 inches long when erect. Don't let these people put you down as they probably have no career, no girlfriend, and no penis to brag about. Oh and you should buy regular condoms since you are average size. 

Wow, that should be a super small.

Easy way.... every company has their own size standard.   Why dont buy a few different brand and try it when you masturbate?

PS: what is a woman condom?   do women have penis?

The length of all condoms is around the same length what you need to know is the girth

It can use the standard size, my tool it measures 6.8 (17 cm) and it serves me, I suppose that to you they will also serve him.  

you need the get the Small one

Ask the girl behind the counter for the smallest size.

For you Small will do

Get the "Puny Little Liar-Boy" brand.