Mass per volume density.
Drams per Cup to Ounces per Tablespoon Converter — dr/cup to oz/tbsp
Convert Dram per Cup (dr/cup) to Ounce per Tablespoon (oz/tbsp) using the exact conversion factor (1 dram per cup = 0.00390625 ounce per tablespoon). See the formula, worked examples, and conversion table.
Drams per Cup to Ounces per Tablespoon 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 Ounces per Tablespoon
Dram per Cup and Ounce per Tablespoon 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
ounces per tablespoon = 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 ounce per tablespoon equals 1917.22283707 base units, so dividing one by the other gives the direct dram per cup-to-ounce per tablespoon factor of 0.00390625.
Simple example
1 dr/cup × 0.00390625 = 0.00390625 oz/tbsp
1 dram per cup = 0.00390625 ounces per tablespoon.
Real-world example
1,000 dr/cup × 0.00390625 = 3.90625 oz/tbsp
1,000 drams per cup = 3.90625 ounces per tablespoon.
Conversion table
| Dram per Cup (dr/cup) | Ounce per Tablespoon (oz/tbsp) |
|---|---|
| 0.1 dr/cup | 0.000390625 oz/tbsp |
| 1 dr/cup | 0.00390625 oz/tbsp |
| 10 dr/cup | 0.0390625 oz/tbsp |
| 100 dr/cup | 0.390625 oz/tbsp |
| 1,000 dr/cup | 3.90625 oz/tbsp |
| 10,000 dr/cup | 39.0625 oz/tbsp |
Reverse conversion: Ounce per Tablespoon to Dram per Cup
0.00390625 oz/tbsp × 256 = 1 dr/cup
0.00390625 ounces per tablespoon = 1 dram per cup.
drams per cup = ounces per tablespoon × 256
For a page dedicated to this direction, see Ounce per Tablespoon to Dram per Cup.
Understanding the Dram per Cup (dr/cup)
Mass per volume density.
Understanding the Ounce per Tablespoon (oz/tbsp)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many ounces per tablespoon are in 1 dram per cup?
1 dram per cup equals 0.00390625 ounces per tablespoon, using the exact defined conversion factor rather than an estimate.
How do I convert dram per cup to ounce per tablespoon?
Multiply the dram per cup value by 0.00390625. The converter above does this instantly to whatever precision you set.
How do I convert ounce per tablespoon back to dram per cup?
Use the reverse factor: 1 ounce per tablespoon 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 ounce per tablespoon?
Ounce per Tablespoon (oz/tbsp) is a unit of density.
Is the dram per cup to ounce per tablespoon conversion exact?
Yes. Both dram per cup and ounce per tablespoon 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.