Mass per volume density.
Pounds per Imperial gallon to Kilograms per Imperial gallon Converter — lb/imp gal to kg/imp gal
Convert Pound per Imperial gallon (lb/imp gal) to Kilogram per Imperial gallon (kg/imp gal) using the exact conversion factor (1 pound per imperial gallon = 0.45359237 kilogram per imperial gallon). See the formula, worked examples, conversion table, and common uses.
Pounds per Imperial 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 99.77637266 / 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 Imperial gallon to Kilograms per Imperial gallon
Pound per Imperial 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. Both are mass per volume density units.
Formula
kilograms per imperial gallon = pounds per imperial gallon × 0.45359237
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 kilogram per imperial gallon equals 219.969248299 base units, so dividing one by the other gives the direct pound per imperial gallon-to-kilogram per imperial gallon factor of 0.45359237.
Simple example
1 lb/imp gal × 0.45359237 = 0.45359237 kg/imp gal
1 pound per imperial gallon = 0.45359237 kilograms per imperial gallon.
Real-world example
1,000 lb/imp gal × 0.45359237 = 453.59237 kg/imp gal
1,000 pounds per imperial gallon = 453.59237 kilograms per imperial gallon.
Conversion table
| Pound per Imperial gallon (lb/imp gal) | Kilogram per Imperial gallon (kg/imp gal) |
|---|---|
| 0.1 lb/imp gal | 0.045359237 kg/imp gal |
| 1 lb/imp gal | 0.45359237 kg/imp gal |
| 10 lb/imp gal | 4.5359237 kg/imp gal |
| 100 lb/imp gal | 45.359237 kg/imp gal |
| 1,000 lb/imp gal | 453.59237 kg/imp gal |
| 10,000 lb/imp gal | 4,535.9237 kg/imp gal |
Reverse conversion: Kilogram per Imperial gallon to Pound per Imperial gallon
0.45359237 kg/imp gal × 2.204622622 = 1 lb/imp gal
0.45359237 kilograms per imperial gallon = 1 pound per imperial gallon.
pounds per imperial gallon = kilograms per imperial gallon × 2.20462262185
For a page dedicated to this direction, see Kilogram per Imperial gallon to Pound per Imperial gallon.
Understanding the Pound per Imperial gallon (lb/imp gal)
Mass per volume density.
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
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 imperial gallon?
1 pound per imperial gallon equals 0.45359237 kilograms per imperial gallon, using the exact defined conversion factor rather than an estimate.
How do I convert pound per imperial gallon to kilogram per imperial gallon?
Multiply the pound per imperial gallon value by 0.45359237. The converter above does this instantly to whatever precision you set.
How do I convert kilogram per imperial gallon back to pound per imperial gallon?
Use the reverse factor: 1 kilogram per imperial gallon equals 2.204622622 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 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 imperial gallon to kilogram per imperial gallon conversion exact?
Yes. Both pound per imperial gallon and kilogram per imperial gallon are defined by fixed standards rather than physical artifacts, so the factor of 0.45359237 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.