Pounds of force per cubic foot x 0.16 (0.157087464) = kilonewtons per cubic meter.
1 kg/cubic metre = 77.853 pounds/ cubic foot.
Pounds per cubic foot x 16.0184634 = kg/m3
Multiply cubic feet by 0.0283 to get cubic meters.
One pound per cubic foot is equal to 16 kilograms per cubic meter.
1 cubic ft = 0.028317 cubic metres
1.77 US tons per cubic meter.
A cubic meter of gravel weighs approximately 3,500 pounds. One cubic foot of gravel weights about 100 to 105 pounds.
1 cubic meter ≈ 35.3146667 cubic foot
You must have a specific gravity to do that . - ie a cubic foot of feathers is not the same weight as a cubic foot of iron.
kilograms per cubic meter and pounds per cubic foot
You cannot do that since cubic yard is volume and square foot is area. You need to know the thickness