Apply for financingDensity
This density calculator divides weight by volume. The default units are pounds and cubic feet, which is the density freight, concrete, and metal buyers already use. Specific gravity compares that result with water at 62.4 pounds per cubic foot.
Density
12.50lb/cu ft
Planning estimate from the numbers you enter. Coverage, density, waste and price are assumptions, not a supplier quote or an engineering specification.
How it works
Enter the weight of the sample and the space it occupies. Twenty-five pounds in two cubic feet is 12.50 pounds per cubic foot. Specific gravity is that density divided by 62.4, or 0.200 in the example. A gram-per-milliliter result is the same idea in metric units. If you measured in other units, convert before you type. The number is only as honest as the volume. A heap that includes air voids is a bulk density, not a solid density. Say which one you measured.
Formula
Specific gravity = pounds per cubic foot ÷ 62.4. Water is the reference. A result above 1 in specific gravity sinks in water. The 62.4 figure is a planning density for water, not a lab correction for temperature.
Example
Density is 12.50 pounds per cubic foot. Specific gravity is 0.200. Those are the fields above. Double the weight and the density doubles. Double the volume and it is cut in half.
Tips
A bucket of gravel includes air. The density you get is a bulk density, which is what a truckload uses. A steel coupon measured with calipers is a solid density. Label the sample the way you measured it.
Equipment
Platform scales and moisture testers are shop and farm equipment. Dengaro arranges equipment financing. The density figure is not a loan amount.
Important questions
Pounds and cubic feet. Divide grams by milliliters yourself if you are already in metric. That quotient is specific gravity directly, because water is about 1 gram per milliliter.
It is the usual planning weight of a cubic foot of water. A lab may use a temperature-corrected value. For freight and material estimates, 62.4 is the comparison this page uses.
Yes. Pounds per cubic foot is the input to the freight class calculator. Measure the shipping cube, not a small solid sample, if the question is the freight class.
Yes. The same weight in a smaller volume is denser. If you compact a fill, measure the volume after compaction when that is the density you need.
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