Mass per volume density.
Pounds per Imperial gallon to Long tons per Gallon Converter — lb/imp gal to long ton/gal
Convert Pound per Imperial gallon (lb/imp gal) to Long ton per Gallon (long ton/gal) using the exact conversion factor (1 pound per imperial gallon = 0.0003717295 long ton per gallon). See the formula, worked examples, and conversion table.
Pounds per Imperial gallon 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 99.77637266 / 268411.1972.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Pounds per Imperial gallon to Long tons per Gallon
Pound per Imperial gallon 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 = pounds per imperial gallon × 0.000371729546709
This factor comes from each unit's defined relationship to the category's base unit: 1 pound per imperial gallon equals 99.7763726631 base units, and 1 long ton per gallon equals 268411.19719 base units, so dividing one by the other gives the direct pound per imperial gallon-to-long ton per gallon factor of 0.000371729546709.
Simple example
1 lb/imp gal × 0.0003717295467 = 0.0003717295 long ton/gal
1 pound per imperial gallon = 0.0003717295 long tons per gallon.
Real-world example
1,000 lb/imp gal × 0.0003717295467 = 0.3717295467 long ton/gal
1,000 pounds per imperial gallon = 0.3717295467 long tons per gallon.
Conversion table
| Pound per Imperial gallon (lb/imp gal) | Long ton per Gallon (long ton/gal) |
|---|---|
| 0.1 lb/imp gal | 0.000037173 long ton/gal |
| 1 lb/imp gal | 0.0003717295 long ton/gal |
| 10 lb/imp gal | 0.0037172955 long ton/gal |
| 100 lb/imp gal | 0.0371729547 long ton/gal |
| 1,000 lb/imp gal | 0.3717295467 long ton/gal |
| 10,000 lb/imp gal | 3.717295467 long ton/gal |
Reverse conversion: Long ton per Gallon to Pound per Imperial gallon
0.0003717295 long ton/gal × 2690.127833 = 0.9999998743 lb/imp gal
0.0003717295 long tons per gallon = 0.9999998743 pounds per imperial gallon.
pounds per imperial gallon = long tons per gallon × 2690.12783313
For a page dedicated to this direction, see Long ton per Gallon to Pound per Imperial gallon.
Understanding the Pound per Imperial gallon (lb/imp gal)
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 pound per imperial gallon?
1 pound per imperial gallon equals 0.0003717295 long tons per gallon, using the exact defined conversion factor rather than an estimate.
How do I convert pound per imperial gallon to long ton per gallon?
Multiply the pound per imperial gallon value by 0.0003717295467. The converter above does this instantly to whatever precision you set.
How do I convert long ton per gallon back to pound per imperial gallon?
Use the reverse factor: 1 long ton per gallon equals 2,690.127833 pounds per imperial gallon. You can also use the swap control in the converter above to flip the direction instantly.
What is a pound per imperial gallon?
Pound per Imperial gallon (lb/imp gal) 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 pound per imperial gallon to long ton per gallon conversion exact?
Yes. Both pound per imperial gallon and long ton per gallon are defined by fixed standards rather than physical artifacts, so the factor of 0.0003717295467 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.