Mass per volume density.
Pounds per Cup to Hectograms per Gallon Converter — lb/cup to hg/gal
Convert Pound per Cup (lb/cup) to Hectogram per Gallon (hg/gal) using the exact conversion factor (1 pound per cup = 72.5747792 hectogram per gallon). See the formula, worked examples, and conversion table.
Pounds per Cup 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 1917.222837 / 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 Cup to Hectograms per Gallon
Pound per Cup 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 cup × 72.5747792
This factor comes from each unit's defined relationship to the category's base unit: 1 pound per cup equals 1917.22283707 base units, and 1 hectogram per gallon equals 26.4172052358 base units, so dividing one by the other gives the direct pound per cup-to-hectogram per gallon factor of 72.5747792.
Simple example
1 lb/cup × 72.5747792 = 72.5747792 hg/gal
1 pound per cup = 72.5747792 hectograms per gallon.
Real-world example
1,000 lb/cup × 72.5747792 = 72,574.7792 hg/gal
1,000 pounds per cup = 72,574.7792 hectograms per gallon.
Conversion table
| Pound per Cup (lb/cup) | Hectogram per Gallon (hg/gal) |
|---|---|
| 0.1 lb/cup | 7.25747792 hg/gal |
| 1 lb/cup | 72.5747792 hg/gal |
| 10 lb/cup | 725.747792 hg/gal |
| 100 lb/cup | 7,257.47792 hg/gal |
| 1,000 lb/cup | 72,574.7792 hg/gal |
| 10,000 lb/cup | 725,747.792 hg/gal |
Reverse conversion: Hectogram per Gallon to Pound per Cup
72.5747792 hg/gal × 0.01377889139 = 1 lb/cup
72.5747792 hectograms per gallon = 1 pounds per cup.
pounds per cup = hectograms per gallon × 0.0137788913866
For a page dedicated to this direction, see Hectogram per Gallon to Pound per Cup.
Understanding the Pound per Cup (lb/cup)
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 cup?
1 pound per cup equals 72.5747792 hectograms per gallon, using the exact defined conversion factor rather than an estimate.
How do I convert pound per cup to hectogram per gallon?
Multiply the pound per cup value by 72.5747792. The converter above does this instantly to whatever precision you set.
How do I convert hectogram per gallon back to pound per cup?
Use the reverse factor: 1 hectogram per gallon equals 0.0137788914 pounds per cup. You can also use the swap control in the converter above to flip the direction instantly.
What is a pound per cup?
Pound per Cup (lb/cup) 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 cup to hectogram per gallon conversion exact?
Yes. Both pound per cup and hectogram per gallon are defined by fixed standards rather than physical artifacts, so the factor of 72.5747792 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.