Mass per volume density.
Pounds per Cubic foot to Grams per Gallon Converter — lb/ft3 to g/gal
Convert Pound per Cubic foot (lb/ft3) to Gram per Gallon (g/gal) using the exact conversion factor (1 pound per cubic foot = 60.63648002 gram per gallon). See the formula, worked examples, conversion table, and common uses.
Pounds per Cubic foot to Grams 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 16.01846337 / 0.2641720524.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Pounds per Cubic foot to Grams per Gallon
Pound per Cubic foot and Gram 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. Pound per Cubic foot is most often used for us construction material density specs (concrete, soil, lumber, insulation).
Formula
grams per gallon = pounds per cubic foot × 60.6364800174
This factor comes from each unit's defined relationship to the category's base unit: 1 pound per cubic foot equals 16.018463374 base units, and 1 gram per gallon equals 0.264172052358 base units, so dividing one by the other gives the direct pound per cubic foot-to-gram per gallon factor of 60.6364800174.
Simple example
1 lb/ft3 × 60.63648002 = 60.63648002 g/gal
1 pound per cubic foot = 60.63648002 grams per gallon.
Real-world example
1,000 lb/ft3 × 60.63648002 = 60,636.48002 g/gal
1,000 pounds per cubic foot = 60,636.48002 grams per gallon.
Conversion table
| Pound per Cubic foot (lb/ft3) | Gram per Gallon (g/gal) |
|---|---|
| 0.1 lb/ft3 | 6.063648002 g/gal |
| 1 lb/ft3 | 60.63648002 g/gal |
| 10 lb/ft3 | 606.3648002 g/gal |
| 100 lb/ft3 | 6,063.648002 g/gal |
| 1,000 lb/ft3 | 60,636.48002 g/gal |
| 10,000 lb/ft3 | 606,364.8002 g/gal |
Reverse conversion: Gram per Gallon to Pound per Cubic foot
60.63648002 g/gal × 0.01649172247 = 1 lb/ft3
60.63648002 grams per gallon = 1 pounds per cubic foot.
pounds per cubic foot = grams per gallon × 0.0164917224699
For a page dedicated to this direction, see Gram per Gallon to Pound per Cubic foot.
Understanding the Pound per Cubic foot
Pound per Cubic foot (lb/ft3) measures density. The US customary unit for expressing density, commonly used in construction and engineering material specifications. It is classified as a US customary density unit.
Where it's used: United States (construction, engineering, materials specifications)
Uses of the Pound per Cubic foot today
- US construction material density specs (concrete, soil, lumber, insulation)
- US engineering material property tables
- Bulk material handling and shipping weight estimates
Understanding the Gram per Gallon (g/gal)
Mass per volume density.
Pound per Cubic foot — 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 grams per gallon are in 1 pound per cubic foot?
1 pound per cubic foot equals 60.63648002 grams per gallon, using the exact defined conversion factor rather than an estimate.
How do I convert pound per cubic foot to gram per gallon?
Multiply the pound per cubic foot value by 60.63648002. The converter above does this instantly to whatever precision you set.
How do I convert gram per gallon back to pound per cubic foot?
Use the reverse factor: 1 gram per gallon equals 0.0164917225 pounds per cubic foot. You can also use the swap control in the converter above to flip the direction instantly.
What is a pound per cubic foot?
Pound per Cubic foot (lb/ft3) measures density. The US customary unit for expressing density, commonly used in construction and engineering material specifications. It is classified as a US customary density unit.
What is a gram per gallon?
Gram per Gallon (g/gal) is a unit of density.
Is the pound per cubic foot to gram per gallon conversion exact?
Yes. Both pound per cubic foot and gram per gallon are defined by fixed standards rather than physical artifacts, so the factor of 60.63648002 used above is exact to as many digits as you choose to display.
Where is the pound per cubic foot still used today?
United States (construction, engineering, materials specifications)
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.