Mass per volume density.
Ounces per Cup to Drams per Teaspoon Converter — oz/cup to dr/tsp
Convert Ounce per Cup (oz/cup) to Dram per Teaspoon (dr/tsp) using the exact conversion factor (1 ounce per cup = 0.3333333333 dram per teaspoon). See the formula, worked examples, and conversion table.
Ounces per Cup to Drams per Teaspoon 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 / 359.479282.
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 Teaspoon
Ounce per Cup and Dram per Teaspoon 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 teaspoon = ounces per cup × 0.333333333333
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 teaspoon equals 359.479281951 base units, so dividing one by the other gives the direct ounce per cup-to-dram per teaspoon factor of 0.333333333333.
Simple example
1 oz/cup × 0.3333333333 = 0.3333333333 dr/tsp
1 ounce per cup = 0.3333333333 drams per teaspoon.
Real-world example
1,000 oz/cup × 0.3333333333 = 333.3333333 dr/tsp
1,000 ounces per cup = 333.3333333 drams per teaspoon.
Conversion table
| Ounce per Cup (oz/cup) | Dram per Teaspoon (dr/tsp) |
|---|---|
| 0.1 oz/cup | 0.0333333333 dr/tsp |
| 1 oz/cup | 0.3333333333 dr/tsp |
| 10 oz/cup | 3.333333333 dr/tsp |
| 100 oz/cup | 33.33333333 dr/tsp |
| 1,000 oz/cup | 333.3333333 dr/tsp |
| 10,000 oz/cup | 3,333.333333 dr/tsp |
Reverse conversion: Dram per Teaspoon to Ounce per Cup
0.3333333333 dr/tsp × 3 = 0.9999999999 oz/cup
0.3333333333 drams per teaspoon = 0.9999999999 ounces per cup.
ounces per cup = drams per teaspoon × 3
For a page dedicated to this direction, see Dram per Teaspoon to Ounce per Cup.
Understanding the Ounce per Cup (oz/cup)
Mass per volume density.
Understanding the Dram per Teaspoon (dr/tsp)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many drams per teaspoon are in 1 ounce per cup?
1 ounce per cup equals 0.3333333333 drams per teaspoon, using the exact defined conversion factor rather than an estimate.
How do I convert ounce per cup to dram per teaspoon?
Multiply the ounce per cup value by 0.3333333333. The converter above does this instantly to whatever precision you set.
How do I convert dram per teaspoon back to ounce per cup?
Use the reverse factor: 1 dram per teaspoon equals 3 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 teaspoon?
Dram per Teaspoon (dr/tsp) is a unit of density.
Is the ounce per cup to dram per teaspoon conversion exact?
Yes. Both ounce per cup and dram per teaspoon are defined by fixed standards rather than physical artifacts, so the factor of 0.3333333333 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.