Mass per volume density.
Stones per Cup to Pounds per Fluid ounce Converter — st/cup to lb/fl oz
Convert Stone per Cup (st/cup) to Pound per Fluid ounce (lb/fl oz) using the exact conversion factor (1 stone per cup = 1.75 pound per fluid ounce). See the formula, worked examples, and conversion table.
Stones per Cup 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 26841.11972 / 15337.7827.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Stones per Cup to Pounds per Fluid ounce
Stone per Cup 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. Both are mass per volume density units.
Formula
pounds per fluid ounce = stones per cup × 1.75
This factor comes from each unit's defined relationship to the category's base unit: 1 stone per cup equals 26841.119719 base units, and 1 pound per fluid ounce equals 15337.7826966 base units, so dividing one by the other gives the direct stone per cup-to-pound per fluid ounce factor of 1.75.
Simple example
1 st/cup × 1.75 = 1.75 lb/fl oz
1 stone per cup = 1.75 pounds per fluid ounce.
Real-world example
1,000 st/cup × 1.75 = 1,750 lb/fl oz
1,000 stones per cup = 1,750 pounds per fluid ounce.
Conversion table
| Stone per Cup (st/cup) | Pound per Fluid ounce (lb/fl oz) |
|---|---|
| 0.1 st/cup | 0.175 lb/fl oz |
| 1 st/cup | 1.75 lb/fl oz |
| 10 st/cup | 17.5 lb/fl oz |
| 100 st/cup | 175 lb/fl oz |
| 1,000 st/cup | 1,750 lb/fl oz |
| 10,000 st/cup | 17,500 lb/fl oz |
Reverse conversion: Pound per Fluid ounce to Stone per Cup
1.75 lb/fl oz × 0.5714285714 = 1 st/cup
1.75 pounds per fluid ounce = 1 stone per cup.
stones per cup = pounds per fluid ounce × 0.571428571429
For a page dedicated to this direction, see Pound per Fluid ounce to Stone per Cup.
Understanding the Stone per Cup (st/cup)
Mass per volume density.
Understanding the Pound per Fluid ounce (lb/fl oz)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many pounds per fluid ounce are in 1 stone per cup?
1 stone per cup equals 1.75 pounds per fluid ounce, using the exact defined conversion factor rather than an estimate.
How do I convert stone per cup to pound per fluid ounce?
Multiply the stone per cup value by 1.75. The converter above does this instantly to whatever precision you set.
How do I convert pound per fluid ounce back to stone per cup?
Use the reverse factor: 1 pound per fluid ounce equals 0.5714285714 stones per cup. You can also use the swap control in the converter above to flip the direction instantly.
What is a stone per cup?
Stone per Cup (st/cup) is a unit of density.
What is a pound per fluid ounce?
Pound per Fluid ounce (lb/fl oz) is a unit of density.
Is the stone per cup to pound per fluid ounce conversion exact?
Yes. Both stone per cup and pound per fluid ounce are defined by fixed standards rather than physical artifacts, so the factor of 1.75 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.