Mass per volume density.
Pounds per Cup to Drams per Cubic Millimeter Converter — lb/cup to dr/mm3
Convert Pound per Cup (lb/cup) to Dram per Cubic Millimeter (dr/mm3) using the exact conversion factor (1 pound per cup = 0.0010820487 dram per cubic millimeter). See the formula, worked examples, and conversion table.
Pounds per Cup to Drams per Cubic Millimeter converter
Converter
Density Converter
Convert thousands of mass-per-volume density combinations for science, engineering, agriculture, and fluids.
Context values
Some unit families need one extra value for a physically accurate result.
Mass per volume density.
Result = input x 1917.222837 / 1.7718452e+6.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Pounds per Cup to Drams per Cubic Millimeter
Pound per Cup and Dram per Cubic Millimeter both measure density — mass per unit volume — a property used to identify materials, check manufacturing quality, and predict whether something floats or sinks. As a fixed reference point, water has a density of exactly 1000 kg/m³ (1 g/cm³, 1 g/mL) at its temperature of maximum density, which is why many density figures in science and engineering are quoted relative to water. Both are mass per volume density units.
Formula
drams per cubic millimeter = pounds per cup × 0.00108204872646
This factor comes from each unit's defined relationship to the category's base unit: 1 pound per cup equals 1917.22283707 base units, and 1 dram per cubic millimeter equals 1771845.19531 base units, so dividing one by the other gives the direct pound per cup-to-dram per cubic millimeter factor of 0.00108204872646.
Simple example
1 lb/cup × 0.001082048726 = 0.0010820487 dr/mm3
1 pound per cup = 0.0010820487 drams per cubic millimeter.
Real-world example
1,000 lb/cup × 0.001082048726 = 1.082048726 dr/mm3
1,000 pounds per cup = 1.082048726 drams per cubic millimeter.
Conversion table
| Pound per Cup (lb/cup) | Dram per Cubic Millimeter (dr/mm3) |
|---|---|
| 0.1 lb/cup | 0.0001082049 dr/mm3 |
| 1 lb/cup | 0.0010820487 dr/mm3 |
| 10 lb/cup | 0.0108204873 dr/mm3 |
| 100 lb/cup | 0.1082048726 dr/mm3 |
| 1,000 lb/cup | 1.082048726 dr/mm3 |
| 10,000 lb/cup | 10.82048726 dr/mm3 |
Reverse conversion: Dram per Cubic Millimeter to Pound per Cup
0.0010820487 dr/mm3 × 924.1727988 = 0.9999999755 lb/cup
0.0010820487 drams per cubic millimeter = 0.9999999755 pounds per cup.
pounds per cup = drams per cubic millimeter × 924.172798828
For a page dedicated to this direction, see Dram per Cubic Millimeter to Pound per Cup.
Understanding the Pound per Cup (lb/cup)
Mass per volume density.
Understanding the Dram per Cubic Millimeter (dr/mm3)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many drams per cubic millimeter are in 1 pound per cup?
1 pound per cup equals 0.0010820487 drams per cubic millimeter, using the exact defined conversion factor rather than an estimate.
How do I convert pound per cup to dram per cubic millimeter?
Multiply the pound per cup value by 0.001082048726. The converter above does this instantly to whatever precision you set.
How do I convert dram per cubic millimeter back to pound per cup?
Use the reverse factor: 1 dram per cubic millimeter equals 924.1727988 pounds per cup. You can also use the swap control in the converter above to flip the direction instantly.
What is a pound per cup?
Pound per Cup (lb/cup) is a unit of density.
What is a dram per cubic millimeter?
Dram per Cubic Millimeter (dr/mm3) is a unit of density.
Is the pound per cup to dram per cubic millimeter conversion exact?
Yes. Both pound per cup and dram per cubic millimeter are defined by fixed standards rather than physical artifacts, so the factor of 0.001082048726 used above is exact to as many digits as you choose to display.
What's the difference between density and mass concentration?
Density is the mass of a pure substance or material per unit volume. Mass concentration is the mass of one component — like a dissolved solute — within a mixture's total volume. The two use the same kind of units but describe different physical situations.