Mass per volume density.
Drams per Pint to Long tons per Gallon Converter — dr/pt to long ton/gal
Convert Dram per Pint (dr/pt) to Long ton per Gallon (long ton/gal) using the exact conversion factor (1 dram per pint = 0.0000139509 long ton per gallon). See the formula, worked examples, and conversion table.
Drams per Pint to Long tons per Gallon 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 3.744575854 / 268411.1972.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Drams per Pint to Long tons per Gallon
Dram per Pint and Long ton per Gallon 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 gallon = drams per pint × 0.0000139508928571
This factor comes from each unit's defined relationship to the category's base unit: 1 dram per pint equals 3.74457585365 base units, and 1 long ton per gallon equals 268411.19719 base units, so dividing one by the other gives the direct dram per pint-to-long ton per gallon factor of 0.0000139508928571.
Simple example
1 dr/pt × 0.00001395089286 = 0.0000139509 long ton/gal
1 dram per pint = 0.0000139509 long tons per gallon.
Real-world example
1,000 dr/pt × 0.00001395089286 = 0.0139508929 long ton/gal
1,000 drams per pint = 0.0139508929 long tons per gallon.
Conversion table
| Dram per Pint (dr/pt) | Long ton per Gallon (long ton/gal) |
|---|---|
| 0.1 dr/pt | 0.0000013951 long ton/gal |
| 1 dr/pt | 0.0000139509 long ton/gal |
| 10 dr/pt | 0.0001395089 long ton/gal |
| 100 dr/pt | 0.0013950893 long ton/gal |
| 1,000 dr/pt | 0.0139508929 long ton/gal |
| 10,000 dr/pt | 0.1395089286 long ton/gal |
Reverse conversion: Long ton per Gallon to Dram per Pint
0.0000139509 long ton/gal × 71680 = 1.000000512 dr/pt
0.0000139509 long tons per gallon = 1.000000512 drams per pint.
drams per pint = long tons per gallon × 71680
For a page dedicated to this direction, see Long ton per Gallon to Dram per Pint.
Understanding the Dram per Pint (dr/pt)
Mass per volume density.
Understanding the Long ton per Gallon (long ton/gal)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many long tons per gallon are in 1 dram per pint?
1 dram per pint equals 0.0000139509 long tons per gallon, using the exact defined conversion factor rather than an estimate.
How do I convert dram per pint to long ton per gallon?
Multiply the dram per pint value by 0.00001395089286. The converter above does this instantly to whatever precision you set.
How do I convert long ton per gallon back to dram per pint?
Use the reverse factor: 1 long ton per gallon equals 71,680 drams per pint. You can also use the swap control in the converter above to flip the direction instantly.
What is a dram per pint?
Dram per Pint (dr/pt) is a unit of density.
What is a long ton per gallon?
Long ton per Gallon (long ton/gal) is a unit of density.
Is the dram per pint to long ton per gallon conversion exact?
Yes. Both dram per pint and long ton per gallon are defined by fixed standards rather than physical artifacts, so the factor of 0.00001395089286 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.