Mass per volume density.
Ounces per Cup to Drams per Fluid ounce Converter — oz/cup to dr/fl oz
Convert Ounce per Cup (oz/cup) to Dram per Fluid ounce (dr/fl oz) using the exact conversion factor (1 ounce per cup = 2 dram per fluid ounce). See the formula, worked examples, and conversion table.
Ounces per Cup to Drams 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 119.8264273 / 59.91321366.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Ounces per Cup to Drams per Fluid ounce
Ounce per Cup and Dram 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
drams per fluid ounce = ounces per cup × 2
This factor comes from each unit's defined relationship to the category's base unit: 1 ounce per cup equals 119.826427317 base units, and 1 dram per fluid ounce equals 59.9132136584 base units, so dividing one by the other gives the direct ounce per cup-to-dram per fluid ounce factor of 2.
Simple example
1 oz/cup × 2 = 2 dr/fl oz
1 ounce per cup = 2 drams per fluid ounce.
Real-world example
1,000 oz/cup × 2 = 2,000 dr/fl oz
1,000 ounces per cup = 2,000 drams per fluid ounce.
Conversion table
| Ounce per Cup (oz/cup) | Dram per Fluid ounce (dr/fl oz) |
|---|---|
| 0.1 oz/cup | 0.2 dr/fl oz |
| 1 oz/cup | 2 dr/fl oz |
| 10 oz/cup | 20 dr/fl oz |
| 100 oz/cup | 200 dr/fl oz |
| 1,000 oz/cup | 2,000 dr/fl oz |
| 10,000 oz/cup | 20,000 dr/fl oz |
Reverse conversion: Dram per Fluid ounce to Ounce per Cup
2 dr/fl oz × 0.5 = 1 oz/cup
2 drams per fluid ounce = 1 ounce per cup.
ounces per cup = drams per fluid ounce × 0.5
For a page dedicated to this direction, see Dram per Fluid ounce to Ounce per Cup.
Understanding the Ounce per Cup (oz/cup)
Mass per volume density.
Understanding the Dram per Fluid ounce (dr/fl oz)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many drams per fluid ounce are in 1 ounce per cup?
1 ounce per cup equals 2 drams per fluid ounce, using the exact defined conversion factor rather than an estimate.
How do I convert ounce per cup to dram per fluid ounce?
Multiply the ounce per cup value by 2. The converter above does this instantly to whatever precision you set.
How do I convert dram per fluid ounce back to ounce per cup?
Use the reverse factor: 1 dram per fluid ounce equals 0.5 ounces per cup. You can also use the swap control in the converter above to flip the direction instantly.
What is a ounce per cup?
Ounce per Cup (oz/cup) is a unit of density.
What is a dram per fluid ounce?
Dram per Fluid ounce (dr/fl oz) is a unit of density.
Is the ounce per cup to dram per fluid ounce conversion exact?
Yes. Both ounce per cup and dram per fluid ounce are defined by fixed standards rather than physical artifacts, so the factor of 2 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.