Mass per volume density.
Hectograms per Gallon to Pounds per Cup Converter — hg/gal to lb/cup
Convert Hectogram per Gallon (hg/gal) to Pound per Cup (lb/cup) using the exact conversion factor (1 hectogram per gallon = 0.0137788914 pound per cup). See the formula, worked examples, and conversion table.
Hectograms per Gallon to Pounds per Cup 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 26.41720524 / 1917.222837.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Hectograms per Gallon to Pounds per Cup
Hectogram per Gallon and Pound per Cup 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 cup = hectograms per gallon × 0.0137788913866
This factor comes from each unit's defined relationship to the category's base unit: 1 hectogram per gallon equals 26.4172052358 base units, and 1 pound per cup equals 1917.22283707 base units, so dividing one by the other gives the direct hectogram per gallon-to-pound per cup factor of 0.0137788913866.
Simple example
1 hg/gal × 0.01377889139 = 0.0137788914 lb/cup
1 hectogram per gallon = 0.0137788914 pounds per cup.
Real-world example
1,000 hg/gal × 0.01377889139 = 13.77889139 lb/cup
1,000 hectograms per gallon = 13.77889139 pounds per cup.
Conversion table
| Hectogram per Gallon (hg/gal) | Pound per Cup (lb/cup) |
|---|---|
| 0.1 hg/gal | 0.0013778891 lb/cup |
| 1 hg/gal | 0.0137788914 lb/cup |
| 10 hg/gal | 0.1377889139 lb/cup |
| 100 hg/gal | 1.377889139 lb/cup |
| 1,000 hg/gal | 13.77889139 lb/cup |
| 10,000 hg/gal | 137.7889139 lb/cup |
Reverse conversion: Pound per Cup to Hectogram per Gallon
0.0137788914 lb/cup × 72.5747792 = 1.000000001 hg/gal
0.0137788914 pounds per cup = 1.000000001 hectograms per gallon.
hectograms per gallon = pounds per cup × 72.5747792
For a page dedicated to this direction, see Pound per Cup to Hectogram per Gallon.
Understanding the Hectogram per Gallon (hg/gal)
Mass per volume density.
Understanding the Pound per Cup (lb/cup)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many pounds per cup are in 1 hectogram per gallon?
1 hectogram per gallon equals 0.0137788914 pounds per cup, using the exact defined conversion factor rather than an estimate.
How do I convert hectogram per gallon to pound per cup?
Multiply the hectogram per gallon value by 0.01377889139. The converter above does this instantly to whatever precision you set.
How do I convert pound per cup back to hectogram per gallon?
Use the reverse factor: 1 pound per cup equals 72.5747792 hectograms per gallon. You can also use the swap control in the converter above to flip the direction instantly.
What is a hectogram per gallon?
Hectogram per Gallon (hg/gal) is a unit of density.
What is a pound per cup?
Pound per Cup (lb/cup) is a unit of density.
Is the hectogram per gallon to pound per cup conversion exact?
Yes. Both hectogram per gallon and pound per cup are defined by fixed standards rather than physical artifacts, so the factor of 0.01377889139 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.