Mass per volume density.
Pounds per Gallon to Grams per Imperial gallon Converter — lb/gal to g/imp gal
Convert Pound per Gallon (lb/gal) to Gram per Imperial gallon (g/imp gal) using the exact conversion factor (1 pound per gallon = 544.741723 gram per imperial gallon). See the formula, worked examples, conversion table, and common uses.
Pounds per Gallon to Grams 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 / 0.2199692483.
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 Grams per Imperial gallon
Pound per Gallon and Gram 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
grams per imperial gallon = pounds per gallon × 544.741722961
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 gram per imperial gallon equals 0.219969248299 base units, so dividing one by the other gives the direct pound per gallon-to-gram per imperial gallon factor of 544.741722961.
Simple example
1 lb/gal × 544.741723 = 544.741723 g/imp gal
1 pound per gallon = 544.741723 grams per imperial gallon.
Real-world example
1,000 lb/gal × 544.741723 = 544,741.723 g/imp gal
1,000 pounds per gallon = 544,741.723 grams per imperial gallon.
Conversion table
| Pound per Gallon (lb/gal) | Gram per Imperial gallon (g/imp gal) |
|---|---|
| 0.1 lb/gal | 54.4741723 g/imp gal |
| 1 lb/gal | 544.741723 g/imp gal |
| 10 lb/gal | 5,447.41723 g/imp gal |
| 100 lb/gal | 54,474.1723 g/imp gal |
| 1,000 lb/gal | 544,741.723 g/imp gal |
| 10,000 lb/gal | 5,447,417.23 g/imp gal |
Reverse conversion: Gram per Imperial gallon to Pound per Gallon
544.741723 g/imp gal × 0.001835732344 = 1 lb/gal
544.741723 grams per imperial gallon = 1 pounds per gallon.
pounds per gallon = grams per imperial gallon × 0.00183573234406
For a page dedicated to this direction, see Gram per Imperial gallon to Pound per Gallon.
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 Gram per Imperial gallon (g/imp gal)
Mass per volume density.
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 grams per imperial gallon are in 1 pound per gallon?
1 pound per gallon equals 544.741723 grams per imperial gallon, using the exact defined conversion factor rather than an estimate.
How do I convert pound per gallon to gram per imperial gallon?
Multiply the pound per gallon value by 544.741723. The converter above does this instantly to whatever precision you set.
How do I convert gram per imperial gallon back to pound per gallon?
Use the reverse factor: 1 gram per imperial gallon equals 0.0018357323 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 gram per imperial gallon?
Gram per Imperial gallon (g/imp gal) is a unit of density.
Is the pound per gallon to gram per imperial gallon conversion exact?
Yes. Both pound per gallon and gram per imperial gallon are defined by fixed standards rather than physical artifacts, so the factor of 544.741723 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)