Mass per volume density.
Ounces per Fluid ounce to Pounds per Cup Converter — oz/fl oz to lb/cup
Convert Ounce per Fluid ounce (oz/fl oz) to Pound per Cup (lb/cup) using the exact conversion factor (1 ounce per fluid ounce = 0.5 pound per cup). See the formula, worked examples, and conversion table.
Ounces per Fluid ounce to Pounds per Cup 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 958.6114185 / 1917.222837.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Ounces per Fluid ounce to Pounds per Cup
Ounce per Fluid ounce and Pound per Cup 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 cup = ounces per fluid ounce × 0.5
This factor comes from each unit's defined relationship to the category's base unit: 1 ounce per fluid ounce equals 958.611418535 base units, and 1 pound per cup equals 1917.22283707 base units, so dividing one by the other gives the direct ounce per fluid ounce-to-pound per cup factor of 0.5.
Simple example
1 oz/fl oz × 0.5 = 0.5 lb/cup
1 ounce per fluid ounce = 0.5 pounds per cup.
Real-world example
1,000 oz/fl oz × 0.5 = 500 lb/cup
1,000 ounces per fluid ounce = 500 pounds per cup.
Conversion table
| Ounce per Fluid ounce (oz/fl oz) | Pound per Cup (lb/cup) |
|---|---|
| 0.1 oz/fl oz | 0.05 lb/cup |
| 1 oz/fl oz | 0.5 lb/cup |
| 10 oz/fl oz | 5 lb/cup |
| 100 oz/fl oz | 50 lb/cup |
| 1,000 oz/fl oz | 500 lb/cup |
| 10,000 oz/fl oz | 5,000 lb/cup |
Reverse conversion: Pound per Cup to Ounce per Fluid ounce
0.5 lb/cup × 2 = 1 oz/fl oz
0.5 pounds per cup = 1 ounce per fluid ounce.
ounces per fluid ounce = pounds per cup × 2
For a page dedicated to this direction, see Pound per Cup to Ounce per Fluid ounce.
Understanding the Ounce per Fluid ounce (oz/fl oz)
Mass per volume density.
Understanding the Pound per Cup (lb/cup)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many pounds per cup are in 1 ounce per fluid ounce?
1 ounce per fluid ounce equals 0.5 pounds per cup, using the exact defined conversion factor rather than an estimate.
How do I convert ounce per fluid ounce to pound per cup?
Multiply the ounce per fluid ounce value by 0.5. The converter above does this instantly to whatever precision you set.
How do I convert pound per cup back to ounce per fluid ounce?
Use the reverse factor: 1 pound per cup equals 2 ounces per fluid ounce. You can also use the swap control in the converter above to flip the direction instantly.
What is a ounce per fluid ounce?
Ounce per Fluid ounce (oz/fl oz) is a unit of density.
What is a pound per cup?
Pound per Cup (lb/cup) is a unit of density.
Is the ounce per fluid ounce to pound per cup conversion exact?
Yes. Both ounce per fluid ounce and pound per cup are defined by fixed standards rather than physical artifacts, so the factor of 0.5 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.