Mass per volume density.
Ounces per Cubic foot to Pounds per Cubic Millimeter Converter — oz/ft3 to lb/mm3
Convert Ounce per Cubic foot (oz/ft3) to Pound per Cubic Millimeter (lb/mm3) using the exact conversion factor (1 ounce per cubic foot = 2.207167e-9 pound per cubic millimeter). See the formula, worked examples, and conversion table.
Ounces per Cubic foot to Pounds per Cubic Millimeter 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 1.001153961 / 4.5359237e+8.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Ounces per Cubic foot to Pounds per Cubic Millimeter
Ounce per Cubic foot and Pound per Cubic Millimeter 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. Both are mass per volume density units.
Formula
pounds per cubic millimeter = ounces per cubic foot × 2.207167e-9
This factor comes from each unit's defined relationship to the category's base unit: 1 ounce per cubic foot equals 1.00115396087 base units, and 1 pound per cubic millimeter equals 453592370 base units, so dividing one by the other gives the direct ounce per cubic foot-to-pound per cubic millimeter factor of 2.207167e-9.
Simple example
1 oz/ft3 × 2.207167e-9 = 2.207167e-9 lb/mm3
1 ounce per cubic foot = 2.207167e-9 pounds per cubic millimeter.
Real-world example
1,000 oz/ft3 × 2.207167e-9 = 0.0000022072 lb/mm3
1,000 ounces per cubic foot = 0.0000022072 pounds per cubic millimeter.
Conversion table
| Ounce per Cubic foot (oz/ft3) | Pound per Cubic Millimeter (lb/mm3) |
|---|---|
| 0.1 oz/ft3 | 2.207167e-10 lb/mm3 |
| 1 oz/ft3 | 2.207167e-9 lb/mm3 |
| 10 oz/ft3 | 2.207167e-8 lb/mm3 |
| 100 oz/ft3 | 2.207167e-7 lb/mm3 |
| 1,000 oz/ft3 | 0.0000022072 lb/mm3 |
| 10,000 oz/ft3 | 0.0000220717 lb/mm3 |
Reverse conversion: Pound per Cubic Millimeter to Ounce per Cubic foot
2.207167e-9 lb/mm3 × 453069545.5 = 1.000000149 oz/ft3
2.207167e-9 pounds per cubic millimeter = 1.000000149 ounces per cubic foot.
ounces per cubic foot = pounds per cubic millimeter × 453069545.472
For a page dedicated to this direction, see Pound per Cubic Millimeter to Ounce per Cubic foot.
Understanding the Ounce per Cubic foot (oz/ft3)
Mass per volume density.
Understanding the Pound per Cubic Millimeter (lb/mm3)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many pounds per cubic millimeter are in 1 ounce per cubic foot?
1 ounce per cubic foot equals 2.207167e-9 pounds per cubic millimeter, using the exact defined conversion factor rather than an estimate.
How do I convert ounce per cubic foot to pound per cubic millimeter?
Multiply the ounce per cubic foot value by 2.207167e-9. The converter above does this instantly to whatever precision you set.
How do I convert pound per cubic millimeter back to ounce per cubic foot?
Use the reverse factor: 1 pound per cubic millimeter equals 453,069,545.5 ounces per cubic foot. You can also use the swap control in the converter above to flip the direction instantly.
What is a ounce per cubic foot?
Ounce per Cubic foot (oz/ft3) is a unit of density.
What is a pound per cubic millimeter?
Pound per Cubic Millimeter (lb/mm3) is a unit of density.
Is the ounce per cubic foot to pound per cubic millimeter conversion exact?
Yes. Both ounce per cubic foot and pound per cubic millimeter are defined by fixed standards rather than physical artifacts, so the factor of 2.207167e-9 used above is exact to as many digits as you choose to display.
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.