Difference between DK and Sport Weight?

I know I should know this…but I don’t.

What’s the difference?

Hi,
Sport weight is a little heavier than fingering or sock yarn and a little lighter than DK (light worsted) yarn. You can see where the different yarn types line up here: http://www.yarnstandards.com/weight.html
HTH.
Katrina

DK - 22 sts/4"; sport - 24 sts/4"

i dunno…lol