What's the width of tthis belt

Only 1 1/2 inches. The ad is incorrect. I only ordered because I needed a 2 inch belt. Very disappointed. I have asked Amazon to require the vendor to correct its ad.

The width is 1 15/32", and the thickness is an eighth of an inch... it does not get caught up in Dickey's pants or short pant belt loops. Hope this was helpful...

Your product description lists the belt as being 54" in length. if i want a belt that is in fact 54" in length, should i select the size 44 option?

I would go about 46. Thankfully, this belt is fully adjustable. For selecting a belt "length" in general, the rule of thumb is to take your pant size and go up one. So if you wear a 52, you would get the belt that is listed as 54". If you wear a 42, you would go for the belt that is listed as 44".

if your waist measures 42 inches......what size belt to order? is the size given the actual length of belt, or the size of waist?

It is recommended that you order the next size up from your waist size. The 42 inches for a 42 size belt would measure 42" from the start of the leather (no buckle) to the center hole.