you cannot, they are two different types of measurements. if you have the density of the substance you have the weight for. you could divide the weight/density.
62.4 pounds per feet cubed converts to about 1000kg per meter cubed.
Here's how I do it. You may find another procedure that you like better.-- take the number of meters cubed-- multiply it by 35.3147-- the answer is feet cubed in the same area
2.3 cubic feet = 3,974.4 cubic inches
Banana
40 pounds per cubic foot equates to 640.74 kg per cubic meter.
You can't convert that - it just doesn't make sense.
Lbs (pounds) are a unit of weight. Ft (feet) are a unit of length. There is no way to universally convert between the two and make any sense at all.
Mass can be measured in pounds in the nearly obsolete Imperial system. You can measure the legth of various items in feet but you cannot convert length to feet.
Inches cubed x 16.387 = cm cubed
you cannot convert the volume of a cylinder from squared to cubed. the volume is always cubed. the area is squared
0.1m^3
divide number by 1000