Mass per volume density.
Pounds per Cup to Dram per Cubic inches Converter — lb/cup to dr/in3
Convert Pound per Cup (lb/cup) to Dram per Cubic inch (dr/in3) using the exact conversion factor (1 pound per cup = 17.73160173 dram per cubic inch). See the formula, worked examples, and conversion table.
Pounds per Cup to Dram per Cubic inches 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 / 108.1246278.
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 Dram per Cubic inches
Pound per Cup and Dram per Cubic inch 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
dram per cubic inches = pounds per cup × 17.7316017316
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 inch equals 108.124627774 base units, so dividing one by the other gives the direct pound per cup-to-dram per cubic inch factor of 17.7316017316.
Simple example
1 lb/cup × 17.73160173 = 17.73160173 dr/in3
1 pound per cup = 17.73160173 dram per cubic inches.
Real-world example
1,000 lb/cup × 17.73160173 = 17,731.60173 dr/in3
1,000 pounds per cup = 17,731.60173 dram per cubic inches.
Conversion table
| Pound per Cup (lb/cup) | Dram per Cubic inch (dr/in3) |
|---|---|
| 0.1 lb/cup | 1.773160173 dr/in3 |
| 1 lb/cup | 17.73160173 dr/in3 |
| 10 lb/cup | 177.3160173 dr/in3 |
| 100 lb/cup | 1,773.160173 dr/in3 |
| 1,000 lb/cup | 17,731.60173 dr/in3 |
| 10,000 lb/cup | 177,316.0173 dr/in3 |
Reverse conversion: Dram per Cubic inch to Pound per Cup
17.73160173 dr/in3 × 0.05639648438 = 0.9999999999 lb/cup
17.73160173 dram per cubic inches = 0.9999999999 pounds per cup.
pounds per cup = dram per cubic inches × 0.056396484375
For a page dedicated to this direction, see Dram per Cubic inch to Pound per Cup.
Understanding the Pound per Cup (lb/cup)
Mass per volume density.
Understanding the Dram per Cubic inch (dr/in3)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many dram per cubic inches are in 1 pound per cup?
1 pound per cup equals 17.73160173 dram per cubic inches, using the exact defined conversion factor rather than an estimate.
How do I convert pound per cup to dram per cubic inch?
Multiply the pound per cup value by 17.73160173. The converter above does this instantly to whatever precision you set.
How do I convert dram per cubic inch back to pound per cup?
Use the reverse factor: 1 dram per cubic inch equals 0.0563964844 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 inch?
Dram per Cubic inch (dr/in3) is a unit of density.
Is the pound per cup to dram per cubic inch conversion exact?
Yes. Both pound per cup and dram per cubic inch are defined by fixed standards rather than physical artifacts, so the factor of 17.73160173 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.