Mass per volume density.
Pounds per Imperial gallon to Hectograms per Gallon Converter — lb/imp gal to hg/gal
Convert Pound per Imperial gallon (lb/imp gal) to Hectogram per Gallon (hg/gal) using the exact conversion factor (1 pound per imperial gallon = 3.776946568 hectogram per gallon). See the formula, worked examples, and conversion table.
Pounds per Imperial gallon to Hectograms 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 / 26.41720524.
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 Hectograms per Gallon
Pound per Imperial gallon and Hectogram 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
hectograms per gallon = pounds per imperial gallon × 3.77694656844
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 hectogram per gallon equals 26.4172052358 base units, so dividing one by the other gives the direct pound per imperial gallon-to-hectogram per gallon factor of 3.77694656844.
Simple example
1 lb/imp gal × 3.776946568 = 3.776946568 hg/gal
1 pound per imperial gallon = 3.776946568 hectograms per gallon.
Real-world example
1,000 lb/imp gal × 3.776946568 = 3,776.946568 hg/gal
1,000 pounds per imperial gallon = 3,776.946568 hectograms per gallon.
Conversion table
| Pound per Imperial gallon (lb/imp gal) | Hectogram per Gallon (hg/gal) |
|---|---|
| 0.1 lb/imp gal | 0.3776946568 hg/gal |
| 1 lb/imp gal | 3.776946568 hg/gal |
| 10 lb/imp gal | 37.76946568 hg/gal |
| 100 lb/imp gal | 377.6946568 hg/gal |
| 1,000 lb/imp gal | 3,776.946568 hg/gal |
| 10,000 lb/imp gal | 37,769.46568 hg/gal |
Reverse conversion: Hectogram per Gallon to Pound per Imperial gallon
3.776946568 hg/gal × 0.2647641373 = 0.9999999999 lb/imp gal
3.776946568 hectograms per gallon = 0.9999999999 pounds per imperial gallon.
pounds per imperial gallon = hectograms per gallon × 0.264764137348
For a page dedicated to this direction, see Hectogram per Gallon to Pound per Imperial gallon.
Understanding the Pound per Imperial gallon (lb/imp gal)
Mass per volume density.
Understanding the Hectogram per Gallon (hg/gal)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many hectograms per gallon are in 1 pound per imperial gallon?
1 pound per imperial gallon equals 3.776946568 hectograms per gallon, using the exact defined conversion factor rather than an estimate.
How do I convert pound per imperial gallon to hectogram per gallon?
Multiply the pound per imperial gallon value by 3.776946568. The converter above does this instantly to whatever precision you set.
How do I convert hectogram per gallon back to pound per imperial gallon?
Use the reverse factor: 1 hectogram per gallon equals 0.2647641373 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 hectogram per gallon?
Hectogram per Gallon (hg/gal) is a unit of density.
Is the pound per imperial gallon to hectogram per gallon conversion exact?
Yes. Both pound per imperial gallon and hectogram per gallon are defined by fixed standards rather than physical artifacts, so the factor of 3.776946568 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.