Mass per volume density.
Pounds per Cubic foot to Ounces per Gallon Converter — lb/ft3 to oz/gal
Convert Pound per Cubic foot (lb/ft3) to Ounce per Gallon (oz/gal) using the exact conversion factor (1 pound per cubic foot = 2.138888889 ounce per gallon). See the formula, worked examples, conversion table, unit comparison, and common uses.
Pounds per Cubic foot to Ounces 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 / 7.489151707.
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 Ounces per Gallon
Pound per Cubic foot and Ounce 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 typically associated with united States (construction, engineering, materials specifications), while Ounce per Gallon is typically associated with united States.
Formula
ounces per gallon = pounds per cubic foot × 2.13888888889
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 ounce per gallon equals 7.48915170731 base units, so dividing one by the other gives the direct pound per cubic foot-to-ounce per gallon factor of 2.13888888889.
Simple example
1 lb/ft3 × 2.138888889 = 2.138888889 oz/gal
1 pound per cubic foot = 2.138888889 ounces per gallon.
Real-world example
1,000 lb/ft3 × 2.138888889 = 2,138.888889 oz/gal
1,000 pounds per cubic foot = 2,138.888889 ounces per gallon.
Conversion table
| Pound per Cubic foot (lb/ft3) | Ounce per Gallon (oz/gal) |
|---|---|
| 0.1 lb/ft3 | 0.2138888889 oz/gal |
| 1 lb/ft3 | 2.138888889 oz/gal |
| 10 lb/ft3 | 21.38888889 oz/gal |
| 100 lb/ft3 | 213.8888889 oz/gal |
| 1,000 lb/ft3 | 2,138.888889 oz/gal |
| 10,000 lb/ft3 | 21,388.88889 oz/gal |
Reverse conversion: Ounce per Gallon to Pound per Cubic foot
2.138888889 oz/gal × 0.4675324675 = 1 lb/ft3
2.138888889 ounces per gallon = 1 pounds per cubic foot.
pounds per cubic foot = ounces per gallon × 0.467532467532
For a page dedicated to this direction, see Ounce per Gallon to Pound per Cubic foot.
Pound per Cubic foot vs. Ounce per Gallon
| Aspect | Pound per Cubic foot | Ounce per Gallon |
|---|---|---|
| Family | US customary density unit | US customary concentration unit |
| Typical use | US construction material density specs (concrete, soil, lumber, insulation) | Used to express dilution rates on many US pesticide, herbicide, and household cleaning product labels, which commonly specify a number of fluid ounces of concentrate per gallon of water |
| Where it's used | United States (construction, engineering, materials specifications) | United States |
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 Ounce per Gallon
Ounce per Gallon (oz/gal) measures concentration (dilution rate). A US customary way to express how much concentrate is mixed into each gallon of a diluted solution. It is classified as a US customary concentration unit.
Where it's used: United States
Uses of the Ounce per Gallon today
- Used to express dilution rates on many US pesticide, herbicide, and household cleaning product labels, which commonly specify a number of fluid ounces of concentrate per gallon of water
Pound per Cubic foot — sources
- NIST Handbook 44 — General tables of units including US customary density measures.
Ounce per Gallon — sources
- US product-label dilution conventions (pesticide/herbicide industry guides) — Fluid ounces of concentrate per gallon is a widely used label format for US spray and cleaning product dilution instructions.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many ounces per gallon are in 1 pound per cubic foot?
1 pound per cubic foot equals 2.138888889 ounces per gallon, using the exact defined conversion factor rather than an estimate.
How do I convert pound per cubic foot to ounce per gallon?
Multiply the pound per cubic foot value by 2.138888889. The converter above does this instantly to whatever precision you set.
How do I convert ounce per gallon back to pound per cubic foot?
Use the reverse factor: 1 ounce per gallon equals 0.4675324675 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 ounce per gallon?
Ounce per Gallon (oz/gal) measures concentration (dilution rate). A US customary way to express how much concentrate is mixed into each gallon of a diluted solution. It is classified as a US customary concentration unit.
Is the pound per cubic foot to ounce per gallon conversion exact?
Yes. Both pound per cubic foot and ounce per gallon are defined by fixed standards rather than physical artifacts, so the factor of 2.138888889 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.