Can't tell you in feet, but as far as it has been learned to me (and I only had 2 weeks of Medieval Archaeology) the average Medieval men were just about the same size as most modern men. That's not Dutch or Scandinavian size, but the more normal size, about 1.65-1.80, some were larger some were smaller. Mind you Medieval Archaeology for me was about Holland and Northern Europe so it might be different in other countries