Mass per volume density.
Pounds per Cubic foot to Pounds per Fluid ounce Converter — lb/ft3 to lb/fl oz
Convert Pound per Cubic foot (lb/ft3) to Pound per Fluid ounce (lb/fl oz) using the exact conversion factor (1 pound per cubic foot = 0.0010443793 pound per fluid ounce). See the formula, worked examples, conversion table, and common uses.
Pounds per Cubic foot to Pounds per Fluid ounce 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 / 15337.7827.
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 Pounds per Fluid ounce
Pound per Cubic foot and Pound per Fluid ounce 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
pounds per fluid ounce = pounds per cubic foot × 0.00104437934028
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 pound per fluid ounce equals 15337.7826966 base units, so dividing one by the other gives the direct pound per cubic foot-to-pound per fluid ounce factor of 0.00104437934028.
Simple example
1 lb/ft3 × 0.00104437934 = 0.0010443793 lb/fl oz
1 pound per cubic foot = 0.0010443793 pounds per fluid ounce.
Real-world example
1,000 lb/ft3 × 0.00104437934 = 1.04437934 lb/fl oz
1,000 pounds per cubic foot = 1.04437934 pounds per fluid ounce.
Conversion table
| Pound per Cubic foot (lb/ft3) | Pound per Fluid ounce (lb/fl oz) |
|---|---|
| 0.1 lb/ft3 | 0.0001044379 lb/fl oz |
| 1 lb/ft3 | 0.0010443793 lb/fl oz |
| 10 lb/ft3 | 0.0104437934 lb/fl oz |
| 100 lb/ft3 | 0.104437934 lb/fl oz |
| 1,000 lb/ft3 | 1.04437934 lb/fl oz |
| 10,000 lb/ft3 | 10.4437934 lb/fl oz |
Reverse conversion: Pound per Fluid ounce to Pound per Cubic foot
0.0010443793 lb/fl oz × 957.5064935 = 0.9999999614 lb/ft3
0.0010443793 pounds per fluid ounce = 0.9999999614 pounds per cubic foot.
pounds per cubic foot = pounds per fluid ounce × 957.506493506
For a page dedicated to this direction, see Pound per Fluid ounce 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 Pound per Fluid ounce (lb/fl oz)
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 pounds per fluid ounce are in 1 pound per cubic foot?
1 pound per cubic foot equals 0.0010443793 pounds per fluid ounce, using the exact defined conversion factor rather than an estimate.
How do I convert pound per cubic foot to pound per fluid ounce?
Multiply the pound per cubic foot value by 0.00104437934. The converter above does this instantly to whatever precision you set.
How do I convert pound per fluid ounce back to pound per cubic foot?
Use the reverse factor: 1 pound per fluid ounce equals 957.5064935 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 pound per fluid ounce?
Pound per Fluid ounce (lb/fl oz) is a unit of density.
Is the pound per cubic foot to pound per fluid ounce conversion exact?
Yes. Both pound per cubic foot and pound per fluid ounce are defined by fixed standards rather than physical artifacts, so the factor of 0.00104437934 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.