Thank you, Kit. So, actually you guys USE it. Is not only for game's sake. But, how can you guys cope with it? I mean: areas are in meter squares, volumes are in liters distances are in kilometers and that's all over the world. Not only. Tons for weight, kiloJaul, KiloWatt, Everything is on base ten because we have ten fingers in our hands. Just like a hundred cents are a dollar.
Also counting. You count by dozens, right?
I will try to do my best (my books used metrical, that depends from the country in which they are printed). The problem is not converting but having the ability to understand the real distance (weight is easier) when trying to be as realistic as possible. I will learn, eventually.
Areas are in Feet and Yards or Acres and miles.
Examples: My house has 750 feet of space with in it. My property face is 50 feet wide, 150 foot deep. My farm is only a half Acre. There are 6 fast-food places within a half Mile of me. School race today every one will be running the 100 yard dash.
Volumes are in Liters and Cups, Ounces among many other units.
Distances are in miles or feet. GPS for example: 600 feet ahead trun right. In 3/10ths of a mile turn right.
Electricity is in kiloJaul, KiloWatt, but that is for people that work with it. I am an artist and it never comes up in my day other then when I go to a store to get a light bulb for the house. So I need a 60watt bulb, or a 70watt bulb. The numbers on the package and honestly I could not tell you what that means other then its unit of electricity and it means the bulb won't blow up in my lamp if I get the right kind.
See this Thread for a Discussion on: Medieval Weights & Measures.