Mass per volume density.
Dram per Cubic inches to Pounds per Cup Converter — dr/in3 to lb/cup
Convert Dram per Cubic inch (dr/in3) to Pound per Cup (lb/cup) using the exact conversion factor (1 dram per cubic inch = 0.0563964844 pound per cup). See the formula, worked examples, and conversion table.
Dram per Cubic inches to Pounds per Cup 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 108.1246278 / 1917.222837.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Dram per Cubic inches to Pounds per Cup
Dram per Cubic inch and Pound per Cup 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
pounds per cup = dram per cubic inches × 0.056396484375
This factor comes from each unit's defined relationship to the category's base unit: 1 dram per cubic inch equals 108.124627774 base units, and 1 pound per cup equals 1917.22283707 base units, so dividing one by the other gives the direct dram per cubic inch-to-pound per cup factor of 0.056396484375.
Simple example
1 dr/in3 × 0.05639648438 = 0.0563964844 lb/cup
1 dram per cubic inch = 0.0563964844 pounds per cup.
Real-world example
1,000 dr/in3 × 0.05639648438 = 56.39648438 lb/cup
1,000 dram per cubic inches = 56.39648438 pounds per cup.
Conversion table
| Dram per Cubic inch (dr/in3) | Pound per Cup (lb/cup) |
|---|---|
| 0.1 dr/in3 | 0.0056396484 lb/cup |
| 1 dr/in3 | 0.0563964844 lb/cup |
| 10 dr/in3 | 0.5639648438 lb/cup |
| 100 dr/in3 | 5.639648438 lb/cup |
| 1,000 dr/in3 | 56.39648438 lb/cup |
| 10,000 dr/in3 | 563.9648438 lb/cup |
Reverse conversion: Pound per Cup to Dram per Cubic inch
0.0563964844 lb/cup × 17.73160173 = 1 dr/in3
0.0563964844 pounds per cup = 1 dram per cubic inches.
dram per cubic inches = pounds per cup × 17.7316017316
For a page dedicated to this direction, see Pound per Cup to Dram per Cubic inch.
Understanding the Dram per Cubic inch (dr/in3)
Mass per volume density.
Understanding the Pound per Cup (lb/cup)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many pounds per cup are in 1 dram per cubic inch?
1 dram per cubic inch equals 0.0563964844 pounds per cup, using the exact defined conversion factor rather than an estimate.
How do I convert dram per cubic inch to pound per cup?
Multiply the dram per cubic inch value by 0.05639648438. The converter above does this instantly to whatever precision you set.
How do I convert pound per cup back to dram per cubic inch?
Use the reverse factor: 1 pound per cup equals 17.73160173 dram per cubic inches. You can also use the swap control in the converter above to flip the direction instantly.
What is a dram per cubic inch?
Dram per Cubic inch (dr/in3) is a unit of density.
What is a pound per cup?
Pound per Cup (lb/cup) is a unit of density.
Is the dram per cubic inch to pound per cup conversion exact?
Yes. Both dram per cubic inch and pound per cup are defined by fixed standards rather than physical artifacts, so the factor of 0.05639648438 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.