Mass per volume density.
Drams per Quart to Long tons per Cup Converter — dr/qt to long ton/cup
Convert Dram per Quart (dr/qt) to Long ton per Cup (long ton/cup) using the exact conversion factor (1 dram per quart = 4.359654e-7 long ton per cup). See the formula, worked examples, and conversion table.
Drams per Quart to Long tons per Cup 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 1.872287927 / 4.29457916e+6.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Drams per Quart to Long tons per Cup
Dram per Quart and Long ton per Cup 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
long tons per cup = drams per quart × 4.359654e-7
This factor comes from each unit's defined relationship to the category's base unit: 1 dram per quart equals 1.87228792683 base units, and 1 long ton per cup equals 4294579.15504 base units, so dividing one by the other gives the direct dram per quart-to-long ton per cup factor of 4.359654e-7.
Simple example
1 dr/qt × 4.359654e-7 = 4.359654e-7 long ton/cup
1 dram per quart = 4.359654e-7 long tons per cup.
Real-world example
1,000 dr/qt × 4.359654e-7 = 0.0004359654 long ton/cup
1,000 drams per quart = 0.0004359654 long tons per cup.
Conversion table
| Dram per Quart (dr/qt) | Long ton per Cup (long ton/cup) |
|---|---|
| 0.1 dr/qt | 4.359654e-8 long ton/cup |
| 1 dr/qt | 4.359654e-7 long ton/cup |
| 10 dr/qt | 0.0000043597 long ton/cup |
| 100 dr/qt | 0.0000435965 long ton/cup |
| 1,000 dr/qt | 0.0004359654 long ton/cup |
| 10,000 dr/qt | 0.004359654 long ton/cup |
Reverse conversion: Long ton per Cup to Dram per Quart
4.359654e-7 long ton/cup × 2293760 = 0.9999999959 dr/qt
4.359654e-7 long tons per cup = 0.9999999959 drams per quart.
drams per quart = long tons per cup × 2293760
For a page dedicated to this direction, see Long ton per Cup to Dram per Quart.
Understanding the Dram per Quart (dr/qt)
Mass per volume density.
Understanding the Long ton per Cup (long ton/cup)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many long tons per cup are in 1 dram per quart?
1 dram per quart equals 4.359654e-7 long tons per cup, using the exact defined conversion factor rather than an estimate.
How do I convert dram per quart to long ton per cup?
Multiply the dram per quart value by 4.359654e-7. The converter above does this instantly to whatever precision you set.
How do I convert long ton per cup back to dram per quart?
Use the reverse factor: 1 long ton per cup equals 2,293,760 drams per quart. You can also use the swap control in the converter above to flip the direction instantly.
What is a dram per quart?
Dram per Quart (dr/qt) is a unit of density.
What is a long ton per cup?
Long ton per Cup (long ton/cup) is a unit of density.
Is the dram per quart to long ton per cup conversion exact?
Yes. Both dram per quart and long ton per cup are defined by fixed standards rather than physical artifacts, so the factor of 4.359654e-7 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.