Mass per volume density.
Grams per Cubic foot to Pounds per Gallon Converter — g/ft3 to lb/gal
Convert Gram per Cubic foot (g/ft3) to Pound per Gallon (lb/gal) using the exact conversion factor (1 gram per cubic foot = 0.0002947152 pound per gallon). See the formula, worked examples, conversion table, unit comparison, and common uses.
Grams per Cubic foot to Pounds 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 0.03531466672 / 119.8264273.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Grams per Cubic foot to Pounds per Gallon
Gram per Cubic foot and Pound 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. Gram per Cubic foot is most often used for 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.
Formula
pounds per gallon = grams per cubic foot × 0.000294715176879
This factor comes from each unit's defined relationship to the category's base unit: 1 gram per cubic foot equals 0.0353146667215 base units, and 1 pound per gallon equals 119.826427317 base units, so dividing one by the other gives the direct gram per cubic foot-to-pound per gallon factor of 0.000294715176879.
Simple example
1 g/ft3 × 0.0002947151769 = 0.0002947152 lb/gal
1 gram per cubic foot = 0.0002947152 pounds per gallon.
Real-world example
1,000 g/ft3 × 0.0002947151769 = 0.2947151769 lb/gal
1,000 grams per cubic foot = 0.2947151769 pounds per gallon.
Conversion table
| Gram per Cubic foot (g/ft3) | Pound per Gallon (lb/gal) |
|---|---|
| 0.1 g/ft3 | 0.0000294715 lb/gal |
| 1 g/ft3 | 0.0002947152 lb/gal |
| 10 g/ft3 | 0.0029471518 lb/gal |
| 100 g/ft3 | 0.0294715177 lb/gal |
| 1,000 g/ft3 | 0.2947151769 lb/gal |
| 10,000 g/ft3 | 2.947151769 lb/gal |
Reverse conversion: Pound per Gallon to Gram per Cubic foot
0.0002947152 lb/gal × 3393.10656 = 1.000000078 g/ft3
0.0002947152 pounds per gallon = 1.000000078 grams per cubic foot.
grams per cubic foot = pounds per gallon × 3393.10656
For a page dedicated to this direction, see Pound per Gallon to Gram per Cubic foot.
Gram per Cubic foot vs. Pound per Gallon
| Aspect | Gram per Cubic foot | Pound per Gallon |
|---|---|---|
| Family | mixed metric/US customary density unit | US customary density unit |
| Typical use | 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 | US paint and coatings density specifications |
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
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
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.
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 pounds per gallon are in 1 gram per cubic foot?
1 gram per cubic foot equals 0.0002947152 pounds per gallon, using the exact defined conversion factor rather than an estimate.
How do I convert gram per cubic foot to pound per gallon?
Multiply the gram per cubic foot value by 0.0002947151769. The converter above does this instantly to whatever precision you set.
How do I convert pound per gallon back to gram per cubic foot?
Use the reverse factor: 1 pound per gallon equals 3,393.10656 grams per cubic foot. You can also use the swap control in the converter above to flip the direction instantly.
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.
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.
Is the gram per cubic foot to pound per gallon conversion exact?
Yes. Both gram per cubic foot and pound per gallon are defined by fixed standards rather than physical artifacts, so the factor of 0.0002947151769 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.