Mass per volume density.
Drams per Cup to Long tons per Teaspoon Converter — dr/cup to long ton/tsp
Convert Dram per Cup (dr/cup) to Long ton per Teaspoon (long ton/tsp) using the exact conversion factor (1 dram per cup = 3.633045e-8 long ton per teaspoon). See the formula, worked examples, and conversion table.
Drams per Cup to Long tons 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 7.489151707 / 2.06139799e+8.
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 Long tons per Teaspoon
Dram per Cup and Long ton 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
long tons per teaspoon = drams per cup × 3.633045e-8
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 long ton per teaspoon equals 206139799.442 base units, so dividing one by the other gives the direct dram per cup-to-long ton per teaspoon factor of 3.633045e-8.
Simple example
1 dr/cup × 3.633045e-8 = 3.633045e-8 long ton/tsp
1 dram per cup = 3.633045e-8 long tons per teaspoon.
Real-world example
1,000 dr/cup × 3.633045e-8 = 0.0000363305 long ton/tsp
1,000 drams per cup = 0.0000363305 long tons per teaspoon.
Conversion table
| Dram per Cup (dr/cup) | Long ton per Teaspoon (long ton/tsp) |
|---|---|
| 0.1 dr/cup | 3.633045e-9 long ton/tsp |
| 1 dr/cup | 3.633045e-8 long ton/tsp |
| 10 dr/cup | 3.633045e-7 long ton/tsp |
| 100 dr/cup | 0.000003633 long ton/tsp |
| 1,000 dr/cup | 0.0000363305 long ton/tsp |
| 10,000 dr/cup | 0.0003633045 long ton/tsp |
Reverse conversion: Long ton per Teaspoon to Dram per Cup
3.633045e-8 long ton/tsp × 27525120 = 0.9999999959 dr/cup
3.633045e-8 long tons per teaspoon = 0.9999999959 drams per cup.
drams per cup = long tons per teaspoon × 27525120
For a page dedicated to this direction, see Long ton per Teaspoon to Dram per Cup.
Understanding the Dram per Cup (dr/cup)
Mass per volume density.
Understanding the Long ton per Teaspoon (long ton/tsp)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many long tons per teaspoon are in 1 dram per cup?
1 dram per cup equals 3.633045e-8 long tons per teaspoon, using the exact defined conversion factor rather than an estimate.
How do I convert dram per cup to long ton per teaspoon?
Multiply the dram per cup value by 3.633045e-8. The converter above does this instantly to whatever precision you set.
How do I convert long ton per teaspoon back to dram per cup?
Use the reverse factor: 1 long ton per teaspoon equals 27,525,120 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 long ton per teaspoon?
Long ton per Teaspoon (long ton/tsp) is a unit of density.
Is the dram per cup to long ton per teaspoon conversion exact?
Yes. Both dram per cup and long ton per teaspoon are defined by fixed standards rather than physical artifacts, so the factor of 3.633045e-8 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.