Mass per volume density.
Long tons per Imperial gallon to Pounds per Gallon Converter — long ton/imp gal to lb/gal
Convert Long ton per Imperial gallon (long ton/imp gal) to Pound per Gallon (lb/gal) using the exact conversion factor (1 long ton per imperial gallon = 1,865.190174 pound per gallon). See the formula, worked examples, conversion table, and common uses.
Long tons per Imperial gallon to Pounds 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 223499.0748 / 119.8264273.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Long tons per Imperial gallon to Pounds per Gallon
Long ton per Imperial gallon and Pound 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
pounds per gallon = long tons per imperial gallon × 1865.19017357
This factor comes from each unit's defined relationship to the category's base unit: 1 long ton per imperial gallon equals 223499.074765 base units, and 1 pound per gallon equals 119.826427317 base units, so dividing one by the other gives the direct long ton per imperial gallon-to-pound per gallon factor of 1865.19017357.
Simple example
1 long ton/imp gal × 1865.190174 = 1,865.190174 lb/gal
1 long ton per imperial gallon = 1,865.190174 pounds per gallon.
Real-world example
1,000 long ton/imp gal × 1865.190174 = 1,865,190.174 lb/gal
1,000 long tons per imperial gallon = 1,865,190.174 pounds per gallon.
Conversion table
| Long ton per Imperial gallon (long ton/imp gal) | Pound per Gallon (lb/gal) |
|---|---|
| 0.1 long ton/imp gal | 186.5190174 lb/gal |
| 1 long ton/imp gal | 1,865.190174 lb/gal |
| 10 long ton/imp gal | 18,651.90174 lb/gal |
| 100 long ton/imp gal | 186,519.0174 lb/gal |
| 1,000 long ton/imp gal | 1,865,190.174 lb/gal |
| 10,000 long ton/imp gal | 18,651,901.74 lb/gal |
Reverse conversion: Pound per Gallon to Long ton per Imperial gallon
1 lb/gal × 0.0005361383596 = 0.0005361384 long ton/imp gal
1 pound per gallon = 0.0005361384 long tons per imperial gallon.
long tons per imperial gallon = pounds per gallon × 0.0005361383596
For a page dedicated to this direction, see Pound per Gallon to Long ton per Imperial gallon.
Understanding the Long ton per Imperial gallon (long ton/imp gal)
Mass per volume density.
Understanding the Pound per Gallon
Pound per Gallon (lb/gal) measures density. The US customary unit for liquid density, based on the US gallon (231 cubic inches). It is classified as a US customary density unit.
Where it's used: United States (paint, fuel, and industrial liquid density specifications)
lb/gal vs. lb/ft³. Both are US customary density units; they're related through the real, fixed relationship between the US gallon and the cubic foot (1 cubic foot ≈ 7.48 US gallons), not a round conversion factor.
Uses of the Pound per Gallon today
- US paint and coatings density specifications
- US fuel and petroleum liquid density specs
- Industrial liquid handling and shipping weight calculations
Pound per Gallon — sources
- NIST Handbook 44 — General tables of units including US customary density measures.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many pounds per gallon are in 1 long ton per imperial gallon?
1 long ton per imperial gallon equals 1,865.190174 pounds per gallon, using the exact defined conversion factor rather than an estimate.
How do I convert long ton per imperial gallon to pound per gallon?
Multiply the long ton per imperial gallon value by 1865.190174. The converter above does this instantly to whatever precision you set.
How do I convert pound per gallon back to long ton per imperial gallon?
Use the reverse factor: 1 pound per gallon equals 0.0005361384 long tons per imperial gallon. You can also use the swap control in the converter above to flip the direction instantly.
What is a long ton per imperial gallon?
Long ton per Imperial gallon (long ton/imp gal) is a unit of density.
What is a pound per gallon?
Pound per Gallon (lb/gal) measures density. The US customary unit for liquid density, based on the US gallon (231 cubic inches). It is classified as a US customary density unit.
Is the long ton per imperial gallon to pound per gallon conversion exact?
Yes. Both long ton per imperial gallon and pound per gallon are defined by fixed standards rather than physical artifacts, so the factor of 1865.190174 used above is exact to as many digits as you choose to display.
What is the difference between lb/gal vs. lb/ft³?
Both are US customary density units; they're related through the real, fixed relationship between the US gallon and the cubic foot (1 cubic foot ≈ 7.48 US gallons), not a round conversion factor.