Mass per volume density.
Pounds per Gallon to Kilograms per Imperial gallon Converter — lb/gal to kg/imp gal
Convert Pound per Gallon (lb/gal) to Kilogram per Imperial gallon (kg/imp gal) using the exact conversion factor (1 pound per gallon = 0.544741723 kilogram per imperial gallon). See the formula, worked examples, conversion table, unit comparison, and common uses.
Pounds per Gallon to Kilograms per Imperial 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 119.8264273 / 219.9692483.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Pounds per Gallon to Kilograms per Imperial gallon
Pound per Gallon and Kilogram per Imperial 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. Pound per Gallon is most often used for us paint and coatings density specifications.
Formula
kilograms per imperial gallon = pounds per gallon × 0.544741722961
This factor comes from each unit's defined relationship to the category's base unit: 1 pound per gallon equals 119.826427317 base units, and 1 kilogram per imperial gallon equals 219.969248299 base units, so dividing one by the other gives the direct pound per gallon-to-kilogram per imperial gallon factor of 0.544741722961.
Simple example
1 lb/gal × 0.544741723 = 0.544741723 kg/imp gal
1 pound per gallon = 0.544741723 kilograms per imperial gallon.
Real-world example
1,000 lb/gal × 0.544741723 = 544.741723 kg/imp gal
1,000 pounds per gallon = 544.741723 kilograms per imperial gallon.
Conversion table
| Pound per Gallon (lb/gal) | Kilogram per Imperial gallon (kg/imp gal) |
|---|---|
| 0.1 lb/gal | 0.0544741723 kg/imp gal |
| 1 lb/gal | 0.544741723 kg/imp gal |
| 10 lb/gal | 5.44741723 kg/imp gal |
| 100 lb/gal | 54.4741723 kg/imp gal |
| 1,000 lb/gal | 544.741723 kg/imp gal |
| 10,000 lb/gal | 5,447.41723 kg/imp gal |
Reverse conversion: Kilogram per Imperial gallon to Pound per Gallon
0.544741723 kg/imp gal × 1.835732344 = 1 lb/gal
0.544741723 kilograms per imperial gallon = 1 pounds per gallon.
pounds per gallon = kilograms per imperial gallon × 1.83573234406
For a page dedicated to this direction, see Kilogram per Imperial gallon to Pound per Gallon.
Pound per Gallon vs. Kilogram per Imperial gallon
| Aspect | Pound per Gallon | Kilogram per Imperial gallon |
|---|---|---|
| Family | US customary density unit | mixed metric/UK customary density unit |
| Typical use | US paint and coatings density specifications | Can be used to express liquid density in UK/Commonwealth contexts that reference the imperial gallon — in practice, kilograms per liter is the more commonly seen metric density unit even in these regions |
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
Understanding the Kilogram per Imperial gallon
Kilogram per Imperial gallon (kg/imp gal) measures density. A mathematically valid way to express liquid density in kilograms per imperial gallon. It is classified as a mixed metric/UK customary density unit.
Uses of the Kilogram per Imperial gallon today
- Can be used to express liquid density in UK/Commonwealth contexts that reference the imperial gallon — in practice, kilograms per liter is the more commonly seen metric density unit even in these regions
Pound per Gallon — sources
- NIST Handbook 44 — General tables of units including US customary density measures.
Kilogram per Imperial gallon — sources
- UK/Commonwealth liquid-measurement references — The imperial gallon remains in some UK/Commonwealth commercial use, but liquid density is more commonly quoted in kilograms per liter.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many kilograms per imperial gallon are in 1 pound per gallon?
1 pound per gallon equals 0.544741723 kilograms per imperial gallon, using the exact defined conversion factor rather than an estimate.
How do I convert pound per gallon to kilogram per imperial gallon?
Multiply the pound per gallon value by 0.544741723. The converter above does this instantly to whatever precision you set.
How do I convert kilogram per imperial gallon back to pound per gallon?
Use the reverse factor: 1 kilogram per imperial gallon equals 1.835732344 pounds per gallon. You can also use the swap control in the converter above to flip the direction instantly.
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.
What is a kilogram per imperial gallon?
Kilogram per Imperial gallon (kg/imp gal) measures density. A mathematically valid way to express liquid density in kilograms per imperial gallon. It is classified as a mixed metric/UK customary density unit.
Is the pound per gallon to kilogram per imperial gallon conversion exact?
Yes. Both pound per gallon and kilogram per imperial gallon are defined by fixed standards rather than physical artifacts, so the factor of 0.544741723 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.
Where is the pound per gallon still used today?
United States (paint, fuel, and industrial liquid density specifications)