Math CentralQuandaries & Queries


Question from Claudette, a parent:

Costco sells bags of dirt in the quantity "55 quarts".. This makes no sense to me.
How many yards of soil is 55 quarts?


Hi Claudette.

Life would be so much simpler if we all used metric, but we don't. From what I can tell, there is only one definition of a cubic yard, but at least five definitions of what a quart is.

According to, the equivalences in
alphabetical order are:

55 quart [Germany] = 0.082 371 067 cubic yard
55 quart [ancient hebrew] = 0.077 692 266 cubic yard
55 quart [UK] = 0.081 758 342 cubic yard
55 quart [US, dry] = 0.079 218 844 cubic yard
55 quart [US, liquid] = 0.068 078 061 cubic yard

Compare this to converting between cubic meters and liters in metric:

1000 liters = 1 cubic meter.

Stephen La Rocque.>

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