Mass per volume density.
Drams per Cup to Pounds per Cup Converter — dr/cup to lb/cup
Convert Dram per Cup (dr/cup) to Pound per Cup (lb/cup) using the exact conversion factor (1 dram per cup = 0.00390625 pound per cup). See the formula, worked examples, and conversion table.
Drams per Cup 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 7.489151707 / 1917.222837.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Drams per Cup to Pounds per Cup
Dram per Cup 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 = drams per cup × 0.00390625
This factor comes from each unit's defined relationship to the category's base unit: 1 dram per cup equals 7.48915170731 base units, and 1 pound per cup equals 1917.22283707 base units, so dividing one by the other gives the direct dram per cup-to-pound per cup factor of 0.00390625.
Simple example
1 dr/cup × 0.00390625 = 0.00390625 lb/cup
1 dram per cup = 0.00390625 pounds per cup.
Real-world example
1,000 dr/cup × 0.00390625 = 3.90625 lb/cup
1,000 drams per cup = 3.90625 pounds per cup.
Conversion table
| Dram per Cup (dr/cup) | Pound per Cup (lb/cup) |
|---|---|
| 0.1 dr/cup | 0.000390625 lb/cup |
| 1 dr/cup | 0.00390625 lb/cup |
| 10 dr/cup | 0.0390625 lb/cup |
| 100 dr/cup | 0.390625 lb/cup |
| 1,000 dr/cup | 3.90625 lb/cup |
| 10,000 dr/cup | 39.0625 lb/cup |
Reverse conversion: Pound per Cup to Dram per Cup
0.00390625 lb/cup × 256 = 1 dr/cup
0.00390625 pounds per cup = 1 dram per cup.
drams per cup = pounds per cup × 256
For a page dedicated to this direction, see Pound per Cup to Dram per Cup.
Understanding the Dram per Cup (dr/cup)
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 cup?
1 dram per cup equals 0.00390625 pounds per cup, using the exact defined conversion factor rather than an estimate.
How do I convert dram per cup to pound per cup?
Multiply the dram per cup value by 0.00390625. The converter above does this instantly to whatever precision you set.
How do I convert pound per cup back to dram per cup?
Use the reverse factor: 1 pound per cup equals 256 drams per cup. You can also use the swap control in the converter above to flip the direction instantly.
What is a dram per cup?
Dram per Cup (dr/cup) 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 cup to pound per cup conversion exact?
Yes. Both dram per cup and pound per cup are defined by fixed standards rather than physical artifacts, so the factor of 0.00390625 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.