Mass per volume density.
Drams per Cup to Milligrams per Fluid ounce Converter — dr/cup to mg/fl oz
Convert Dram per Cup (dr/cup) to Milligram per Fluid ounce (mg/fl oz) using the exact conversion factor (1 dram per cup = 221.4806494 milligram per fluid ounce). See the formula, worked examples, and conversion table.
Drams per Cup to Milligrams per Fluid ounce 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 / 0.0338140227.
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 Milligrams per Fluid ounce
Dram per Cup and Milligram per Fluid ounce 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
milligrams per fluid ounce = drams per cup × 221.480649414
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 milligram per fluid ounce equals 0.0338140227018 base units, so dividing one by the other gives the direct dram per cup-to-milligram per fluid ounce factor of 221.480649414.
Simple example
1 dr/cup × 221.4806494 = 221.4806494 mg/fl oz
1 dram per cup = 221.4806494 milligrams per fluid ounce.
Real-world example
1,000 dr/cup × 221.4806494 = 221,480.6494 mg/fl oz
1,000 drams per cup = 221,480.6494 milligrams per fluid ounce.
Conversion table
| Dram per Cup (dr/cup) | Milligram per Fluid ounce (mg/fl oz) |
|---|---|
| 0.1 dr/cup | 22.14806494 mg/fl oz |
| 1 dr/cup | 221.4806494 mg/fl oz |
| 10 dr/cup | 2,214.806494 mg/fl oz |
| 100 dr/cup | 22,148.06494 mg/fl oz |
| 1,000 dr/cup | 221,480.6494 mg/fl oz |
| 10,000 dr/cup | 2,214,806.494 mg/fl oz |
Reverse conversion: Milligram per Fluid ounce to Dram per Cup
221.4806494 mg/fl oz × 0.00451506713 = 0.9999999999 dr/cup
221.4806494 milligrams per fluid ounce = 0.9999999999 drams per cup.
drams per cup = milligrams per fluid ounce × 0.00451506712955
For a page dedicated to this direction, see Milligram per Fluid ounce to Dram per Cup.
Understanding the Dram per Cup (dr/cup)
Mass per volume density.
Understanding the Milligram per Fluid ounce (mg/fl oz)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many milligrams per fluid ounce are in 1 dram per cup?
1 dram per cup equals 221.4806494 milligrams per fluid ounce, using the exact defined conversion factor rather than an estimate.
How do I convert dram per cup to milligram per fluid ounce?
Multiply the dram per cup value by 221.4806494. The converter above does this instantly to whatever precision you set.
How do I convert milligram per fluid ounce back to dram per cup?
Use the reverse factor: 1 milligram per fluid ounce equals 0.0045150671 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 milligram per fluid ounce?
Milligram per Fluid ounce (mg/fl oz) is a unit of density.
Is the dram per cup to milligram per fluid ounce conversion exact?
Yes. Both dram per cup and milligram per fluid ounce are defined by fixed standards rather than physical artifacts, so the factor of 221.4806494 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.