How big are wolf spiders?

Adult Wolf Spiders are about as big as your middle finger and your thumb curved to make a ring. I have wolf spiders in my home and i have a phobia of spiders, especially the big spiders. they are as tall as about an inch, or maybe half an inch. The "not fully grown" spiders are much faster than adult wolf spiders. These kinds of spiders are harmless, as well as 97.8% of all spiders in America.