Mass per volume density.
Pounds per Imperial gallon to Kilograms per Gallon Converter — lb/imp gal to kg/gal
Convert Pound per Imperial gallon (lb/imp gal) to Kilogram per Gallon (kg/gal) using the exact conversion factor (1 pound per imperial gallon = 0.3776946568 kilogram per gallon). See the formula, worked examples, conversion table, and common uses.
Pounds per Imperial gallon to Kilograms 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 / 264.1720524.
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 Gallon
Pound per Imperial gallon and Kilogram 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
kilograms per gallon = pounds per imperial gallon × 0.377694656844
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 gallon equals 264.172052358 base units, so dividing one by the other gives the direct pound per imperial gallon-to-kilogram per gallon factor of 0.377694656844.
Simple example
1 lb/imp gal × 0.3776946568 = 0.3776946568 kg/gal
1 pound per imperial gallon = 0.3776946568 kilograms per gallon.
Real-world example
1,000 lb/imp gal × 0.3776946568 = 377.6946568 kg/gal
1,000 pounds per imperial gallon = 377.6946568 kilograms per gallon.
Conversion table
| Pound per Imperial gallon (lb/imp gal) | Kilogram per Gallon (kg/gal) |
|---|---|
| 0.1 lb/imp gal | 0.0377694657 kg/gal |
| 1 lb/imp gal | 0.3776946568 kg/gal |
| 10 lb/imp gal | 3.776946568 kg/gal |
| 100 lb/imp gal | 37.76946568 kg/gal |
| 1,000 lb/imp gal | 377.6946568 kg/gal |
| 10,000 lb/imp gal | 3,776.946568 kg/gal |
Reverse conversion: Kilogram per Gallon to Pound per Imperial gallon
0.3776946568 kg/gal × 2.647641373 = 0.9999999999 lb/imp gal
0.3776946568 kilograms per gallon = 0.9999999999 pounds per imperial gallon.
pounds per imperial gallon = kilograms per gallon × 2.64764137348
For a page dedicated to this direction, see Kilogram per Gallon to Pound per Imperial gallon.
Understanding the Pound per Imperial gallon (lb/imp gal)
Mass per volume density.
Understanding the Kilogram per Gallon
Kilogram per Gallon (kg/gal) measures density. A mathematically valid way to express liquid density in kilograms per US gallon. It is classified as a mixed metric/US customary density unit.
Uses of the Kilogram per Gallon today
- Can be used to express liquid density such as fuel or industrial liquids in kilograms per gallon — in practice, kilograms per liter (metric) and pounds per gallon (US customary) are the specific pairings more commonly seen in fuel and liquid-density references
Kilogram per Gallon — sources
- Fuel and petroleum liquid-density references — Liquid density figures for fuels are typically reported in kg/L, kg/m³, or lb/gal rather than kg/gal.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many kilograms per gallon are in 1 pound per imperial gallon?
1 pound per imperial gallon equals 0.3776946568 kilograms per gallon, using the exact defined conversion factor rather than an estimate.
How do I convert pound per imperial gallon to kilogram per gallon?
Multiply the pound per imperial gallon value by 0.3776946568. The converter above does this instantly to whatever precision you set.
How do I convert kilogram per gallon back to pound per imperial gallon?
Use the reverse factor: 1 kilogram per gallon equals 2.647641373 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 gallon?
Kilogram per Gallon (kg/gal) measures density. A mathematically valid way to express liquid density in kilograms per US gallon. It is classified as a mixed metric/US customary density unit.
Is the pound per imperial gallon to kilogram per gallon conversion exact?
Yes. Both pound per imperial gallon and kilogram per gallon are defined by fixed standards rather than physical artifacts, so the factor of 0.3776946568 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.