It measures 10 1/2 rim to rim. It sits flat enough to use on a glass top stove. The cooking surface is very smooth with some incredibly light pinpricks (that you can’t feel) and some utensil marks. The bottom is perfect and has the very common sand shift. I took many pictures in different lighting/angles to show the true condition of the pan. This pan was cleaned to bare iron with electrolysis and seasoned four times and is ready to use right away.