Mass per volume density.
Hectograms per Cup to Pounds per Imperial gallon Converter — hg/cup to lb/imp gal
Convert Hectogram per Cup (hg/cup) to Pound per Imperial gallon (lb/imp gal) using the exact conversion factor (1 hectogram per cup = 4.236226198 pound per imperial gallon). See the formula, worked examples, and conversion table.
Hectograms per Cup to Pounds 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 422.6752838 / 99.77637266.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Hectograms per Cup to Pounds per Imperial gallon
Hectogram per Cup and Pound 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
pounds per imperial gallon = hectograms per cup × 4.23622619756
This factor comes from each unit's defined relationship to the category's base unit: 1 hectogram per cup equals 422.675283773 base units, and 1 pound per imperial gallon equals 99.7763726631 base units, so dividing one by the other gives the direct hectogram per cup-to-pound per imperial gallon factor of 4.23622619756.
Simple example
1 hg/cup × 4.236226198 = 4.236226198 lb/imp gal
1 hectogram per cup = 4.236226198 pounds per imperial gallon.
Real-world example
1,000 hg/cup × 4.236226198 = 4,236.226198 lb/imp gal
1,000 hectograms per cup = 4,236.226198 pounds per imperial gallon.
Conversion table
| Hectogram per Cup (hg/cup) | Pound per Imperial gallon (lb/imp gal) |
|---|---|
| 0.1 hg/cup | 0.4236226198 lb/imp gal |
| 1 hg/cup | 4.236226198 lb/imp gal |
| 10 hg/cup | 42.36226198 lb/imp gal |
| 100 hg/cup | 423.6226198 lb/imp gal |
| 1,000 hg/cup | 4,236.226198 lb/imp gal |
| 10,000 hg/cup | 42,362.26198 lb/imp gal |
Reverse conversion: Pound per Imperial gallon to Hectogram per Cup
4.236226198 lb/imp gal × 0.2360591605 = 1 hg/cup
4.236226198 pounds per imperial gallon = 1 hectograms per cup.
hectograms per cup = pounds per imperial gallon × 0.236059160527
For a page dedicated to this direction, see Pound per Imperial gallon to Hectogram per Cup.
Understanding the Hectogram per Cup (hg/cup)
Mass per volume density.
Understanding the Pound per Imperial gallon (lb/imp gal)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many pounds per imperial gallon are in 1 hectogram per cup?
1 hectogram per cup equals 4.236226198 pounds per imperial gallon, using the exact defined conversion factor rather than an estimate.
How do I convert hectogram per cup to pound per imperial gallon?
Multiply the hectogram per cup value by 4.236226198. The converter above does this instantly to whatever precision you set.
How do I convert pound per imperial gallon back to hectogram per cup?
Use the reverse factor: 1 pound per imperial gallon equals 0.2360591605 hectograms per cup. You can also use the swap control in the converter above to flip the direction instantly.
What is a hectogram per cup?
Hectogram per Cup (hg/cup) is a unit of density.
What is a pound per imperial gallon?
Pound per Imperial gallon (lb/imp gal) is a unit of density.
Is the hectogram per cup to pound per imperial gallon conversion exact?
Yes. Both hectogram per cup and pound per imperial gallon are defined by fixed standards rather than physical artifacts, so the factor of 4.236226198 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.