Mass per volume density.
Pounds per Gallon to Hectograms per Cubic foot Converter — lb/gal to hg/ft3
Convert Pound per Gallon (lb/gal) to Hectogram per Cubic foot (hg/ft3) using the exact conversion factor (1 pound per gallon = 33.9310656 hectogram per cubic foot). See the formula, worked examples, conversion table, and common uses.
Pounds per Gallon to Hectograms per Cubic foot 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 / 3.531466672.
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 Cubic foot
Pound per Gallon and Hectogram per Cubic foot 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 cubic foot = pounds per gallon × 33.9310656
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 cubic foot equals 3.53146667215 base units, so dividing one by the other gives the direct pound per gallon-to-hectogram per cubic foot factor of 33.9310656.
Simple example
1 lb/gal × 33.9310656 = 33.9310656 hg/ft3
1 pound per gallon = 33.9310656 hectograms per cubic foot.
Real-world example
1,000 lb/gal × 33.9310656 = 33,931.0656 hg/ft3
1,000 pounds per gallon = 33,931.0656 hectograms per cubic foot.
Conversion table
| Pound per Gallon (lb/gal) | Hectogram per Cubic foot (hg/ft3) |
|---|---|
| 0.1 lb/gal | 3.39310656 hg/ft3 |
| 1 lb/gal | 33.9310656 hg/ft3 |
| 10 lb/gal | 339.310656 hg/ft3 |
| 100 lb/gal | 3,393.10656 hg/ft3 |
| 1,000 lb/gal | 33,931.0656 hg/ft3 |
| 10,000 lb/gal | 339,310.656 hg/ft3 |
Reverse conversion: Hectogram per Cubic foot to Pound per Gallon
33.9310656 hg/ft3 × 0.02947151769 = 1 lb/gal
33.9310656 hectograms per cubic foot = 1 pound per gallon.
pounds per gallon = hectograms per cubic foot × 0.0294715176879
For a page dedicated to this direction, see Hectogram per Cubic foot 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 Cubic foot (hg/ft3)
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 cubic foot are in 1 pound per gallon?
1 pound per gallon equals 33.9310656 hectograms per cubic foot, using the exact defined conversion factor rather than an estimate.
How do I convert pound per gallon to hectogram per cubic foot?
Multiply the pound per gallon value by 33.9310656. The converter above does this instantly to whatever precision you set.
How do I convert hectogram per cubic foot back to pound per gallon?
Use the reverse factor: 1 hectogram per cubic foot equals 0.0294715177 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 cubic foot?
Hectogram per Cubic foot (hg/ft3) is a unit of density.
Is the pound per gallon to hectogram per cubic foot conversion exact?
Yes. Both pound per gallon and hectogram per cubic foot are defined by fixed standards rather than physical artifacts, so the factor of 33.9310656 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)