>> 12 Cubic Yards of compost
Hmm, wheelbarrows seem to run 3-8 cubic FEET. Let's go with "3" because a lot of gardeners don't have bulging biceps or huge yards.
12 cubic yards x 27 cu ft / cu yd = 324 cu ft.
324 / 3 = 108 small wheelbarrow loads.
Or, if you have a 6 cubic foot wheelbarrow, 54 arm-wrenching loads!