Quote fromThe wide variety of answers to how tall a minecraft character is is testament to how much the standard system sucks.
I don't get how answers can vary, considering there is one and only one conversion factor between feet and meters.
But yes, imperial measurements suck. They actually came from Britain...
2 blocks = 2 meters = 2.1872266 yards = 6.56167979 feet
But in general, people here in the US use a yard as the same length as a meter (when accuracy doesn't matter). It's just easier for conversions than 3.2808399 feet = 1 meter.