Mass per volume density.
Ounces per Fluid ounce to Drams per Fluid ounce Converter — oz/fl oz to dr/fl oz
Convert Ounce per Fluid ounce (oz/fl oz) to Dram per Fluid ounce (dr/fl oz) using the exact conversion factor (1 ounce per fluid ounce = 16 dram per fluid ounce). See the formula, worked examples, and conversion table.
Ounces per Fluid ounce 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 958.6114185 / 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 Fluid ounce to Drams per Fluid ounce
Ounce per Fluid ounce 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 fluid ounce × 16
This factor comes from each unit's defined relationship to the category's base unit: 1 ounce per fluid ounce equals 958.611418535 base units, and 1 dram per fluid ounce equals 59.9132136584 base units, so dividing one by the other gives the direct ounce per fluid ounce-to-dram per fluid ounce factor of 16.
Simple example
1 oz/fl oz × 16 = 16 dr/fl oz
1 ounce per fluid ounce = 16 drams per fluid ounce.
Real-world example
1,000 oz/fl oz × 16 = 16,000 dr/fl oz
1,000 ounces per fluid ounce = 16,000 drams per fluid ounce.
Conversion table
| Ounce per Fluid ounce (oz/fl oz) | Dram per Fluid ounce (dr/fl oz) |
|---|---|
| 0.1 oz/fl oz | 1.6 dr/fl oz |
| 1 oz/fl oz | 16 dr/fl oz |
| 10 oz/fl oz | 160 dr/fl oz |
| 100 oz/fl oz | 1,600 dr/fl oz |
| 1,000 oz/fl oz | 16,000 dr/fl oz |
| 10,000 oz/fl oz | 160,000 dr/fl oz |
Reverse conversion: Dram per Fluid ounce to Ounce per Fluid ounce
16 dr/fl oz × 0.0625 = 1 oz/fl oz
16 drams per fluid ounce = 1 ounce per fluid ounce.
ounces per fluid ounce = drams per fluid ounce × 0.0625
For a page dedicated to this direction, see Dram per Fluid ounce to Ounce per Fluid ounce.
Understanding the Ounce per Fluid ounce (oz/fl oz)
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 fluid ounce?
1 ounce per fluid ounce equals 16 drams per fluid ounce, using the exact defined conversion factor rather than an estimate.
How do I convert ounce per fluid ounce to dram per fluid ounce?
Multiply the ounce per fluid ounce value by 16. The converter above does this instantly to whatever precision you set.
How do I convert dram per fluid ounce back to ounce per fluid ounce?
Use the reverse factor: 1 dram per fluid ounce equals 0.0625 ounces per fluid ounce. You can also use the swap control in the converter above to flip the direction instantly.
What is a ounce per fluid ounce?
Ounce per Fluid ounce (oz/fl oz) 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 fluid ounce to dram per fluid ounce conversion exact?
Yes. Both ounce per fluid ounce and dram per fluid ounce are defined by fixed standards rather than physical artifacts, so the factor of 16 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.