Mass per volume density.
Pounds per Gallon to Grams per Cubic foot Converter — lb/gal to g/ft3
Convert Pound per Gallon (lb/gal) to Gram per Cubic foot (g/ft3) using the exact conversion factor (1 pound per gallon = 3,393.10656 gram per cubic foot). See the formula, worked examples, conversion table, unit comparison, and common uses.
Pounds per Gallon to Grams 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 / 0.03531466672.
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 Grams per Cubic foot
Pound per Gallon and Gram 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
grams per cubic foot = pounds per gallon × 3393.10656
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 gram per cubic foot equals 0.0353146667215 base units, so dividing one by the other gives the direct pound per gallon-to-gram per cubic foot factor of 3393.10656.
Simple example
1 lb/gal × 3393.10656 = 3,393.10656 g/ft3
1 pound per gallon = 3,393.10656 grams per cubic foot.
Real-world example
1,000 lb/gal × 3393.10656 = 3,393,106.56 g/ft3
1,000 pounds per gallon = 3,393,106.56 grams per cubic foot.
Conversion table
| Pound per Gallon (lb/gal) | Gram per Cubic foot (g/ft3) |
|---|---|
| 0.1 lb/gal | 339.310656 g/ft3 |
| 1 lb/gal | 3,393.10656 g/ft3 |
| 10 lb/gal | 33,931.0656 g/ft3 |
| 100 lb/gal | 339,310.656 g/ft3 |
| 1,000 lb/gal | 3,393,106.56 g/ft3 |
| 10,000 lb/gal | 33,931,065.6 g/ft3 |
Reverse conversion: Gram per Cubic foot to Pound per Gallon
1 g/ft3 × 0.0002947151769 = 0.0002947152 lb/gal
1 gram per cubic foot = 0.0002947152 pounds per gallon.
pounds per gallon = grams per cubic foot × 0.000294715176879
For a page dedicated to this direction, see Gram per Cubic foot to Pound per Gallon.
Pound per Gallon vs. Gram per Cubic foot
| Aspect | Pound per Gallon | Gram per Cubic foot |
|---|---|---|
| Family | US customary density unit | mixed metric/US customary density unit |
| Typical use | US paint and coatings density specifications | Can be used to express the density of low-density materials such as insulation foam, packaging material, or gas concentration by volume — for typical solid or liquid materials, kilograms per cubic meter or pounds per cubic foot are more commonly encountered |
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 Gram per Cubic foot
Gram per Cubic foot (g/ft3) measures density. A gram is a small mass unit and a cubic foot a comparatively large volume, so this combination naturally suits low-density materials rather than typical solids or liquids. It is classified as a mixed metric/US customary density unit.
Uses of the Gram per Cubic foot today
- Can be used to express the density of low-density materials such as insulation foam, packaging material, or gas concentration by volume — for typical solid or liquid materials, kilograms per cubic meter or pounds per cubic foot are more commonly encountered
Pound per Gallon — sources
- NIST Handbook 44 — General tables of units including US customary density measures.
Gram per Cubic foot — sources
- BIPM SI Brochure — Gram and cubic foot as units combinable to express density, though not a standard industry pairing for general materials.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many grams per cubic foot are in 1 pound per gallon?
1 pound per gallon equals 3,393.10656 grams per cubic foot, using the exact defined conversion factor rather than an estimate.
How do I convert pound per gallon to gram per cubic foot?
Multiply the pound per gallon value by 3393.10656. The converter above does this instantly to whatever precision you set.
How do I convert gram per cubic foot back to pound per gallon?
Use the reverse factor: 1 gram per cubic foot equals 0.0002947152 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 gram per cubic foot?
Gram per Cubic foot (g/ft3) measures density. A gram is a small mass unit and a cubic foot a comparatively large volume, so this combination naturally suits low-density materials rather than typical solids or liquids. It is classified as a mixed metric/US customary density unit.
Is the pound per gallon to gram per cubic foot conversion exact?
Yes. Both pound per gallon and gram per cubic foot are defined by fixed standards rather than physical artifacts, so the factor of 3393.10656 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)