Mass per volume density.
Pounds per Gallon to Hectograms per Imperial gallon Converter — lb/gal to hg/imp gal
Convert Pound per Gallon (lb/gal) to Hectogram per Imperial gallon (hg/imp gal) using the exact conversion factor (1 pound per gallon = 5.44741723 hectogram per imperial gallon). See the formula, worked examples, conversion table, and common uses.
Pounds per Gallon to Hectograms 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 / 21.99692483.
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 Hectograms per Imperial gallon
Pound per Gallon and Hectogram 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
hectograms per imperial gallon = pounds per gallon × 5.44741722961
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 hectogram per imperial gallon equals 21.9969248299 base units, so dividing one by the other gives the direct pound per gallon-to-hectogram per imperial gallon factor of 5.44741722961.
Simple example
1 lb/gal × 5.44741723 = 5.44741723 hg/imp gal
1 pound per gallon = 5.44741723 hectograms per imperial gallon.
Real-world example
1,000 lb/gal × 5.44741723 = 5,447.41723 hg/imp gal
1,000 pounds per gallon = 5,447.41723 hectograms per imperial gallon.
Conversion table
| Pound per Gallon (lb/gal) | Hectogram per Imperial gallon (hg/imp gal) |
|---|---|
| 0.1 lb/gal | 0.544741723 hg/imp gal |
| 1 lb/gal | 5.44741723 hg/imp gal |
| 10 lb/gal | 54.4741723 hg/imp gal |
| 100 lb/gal | 544.741723 hg/imp gal |
| 1,000 lb/gal | 5,447.41723 hg/imp gal |
| 10,000 lb/gal | 54,474.1723 hg/imp gal |
Reverse conversion: Hectogram per Imperial gallon to Pound per Gallon
5.44741723 hg/imp gal × 0.1835732344 = 1 lb/gal
5.44741723 hectograms per imperial gallon = 1 pounds per gallon.
pounds per gallon = hectograms per imperial gallon × 0.183573234406
For a page dedicated to this direction, see Hectogram 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 Hectogram per Imperial gallon (hg/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 hectograms per imperial gallon are in 1 pound per gallon?
1 pound per gallon equals 5.44741723 hectograms per imperial gallon, using the exact defined conversion factor rather than an estimate.
How do I convert pound per gallon to hectogram per imperial gallon?
Multiply the pound per gallon value by 5.44741723. The converter above does this instantly to whatever precision you set.
How do I convert hectogram per imperial gallon back to pound per gallon?
Use the reverse factor: 1 hectogram per imperial gallon equals 0.1835732344 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 hectogram per imperial gallon?
Hectogram per Imperial gallon (hg/imp gal) is a unit of density.
Is the pound per gallon to hectogram per imperial gallon conversion exact?
Yes. Both pound per gallon and hectogram per imperial gallon are defined by fixed standards rather than physical artifacts, so the factor of 5.44741723 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)