stupid question but not sure of the right answer

ormus

some handy (rough) rules of thumb to remember,

half an inch is 15mm.
2 inches is 50mm
a foot is 30cm.
a metre is 39 inches.
8x4 sheet is 2400x1200mm
a hectare is 100m x 100m or 2.5 acres.

Lincoln_Imp

http://www.metric-conversions.org/

pinkteapot

Type "1 metre in feet" into Google (without the speech marks). Hit enter. The answer appears.

Works for most conversions. You can work out how far your drive to work is in light years if you want...