Mass per volume density.
Pounds per Cup to Stones per Pint Converter — lb/cup to st/pt
Convert Pound per Cup (lb/cup) to Stone per Pint (st/pt) using the exact conversion factor (1 pound per cup = 0.1428571429 stone per pint). See the formula, worked examples, and conversion table.
Pounds per Cup to Stones per Pint 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 1917.222837 / 13420.55986.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Pounds per Cup to Stones per Pint
Pound per Cup and Stone per Pint 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
stones per pint = pounds per cup × 0.142857142857
This factor comes from each unit's defined relationship to the category's base unit: 1 pound per cup equals 1917.22283707 base units, and 1 stone per pint equals 13420.5598595 base units, so dividing one by the other gives the direct pound per cup-to-stone per pint factor of 0.142857142857.
Simple example
1 lb/cup × 0.1428571429 = 0.1428571429 st/pt
1 pound per cup = 0.1428571429 stones per pint.
Real-world example
1,000 lb/cup × 0.1428571429 = 142.8571429 st/pt
1,000 pounds per cup = 142.8571429 stones per pint.
Conversion table
| Pound per Cup (lb/cup) | Stone per Pint (st/pt) |
|---|---|
| 0.1 lb/cup | 0.0142857143 st/pt |
| 1 lb/cup | 0.1428571429 st/pt |
| 10 lb/cup | 1.428571429 st/pt |
| 100 lb/cup | 14.28571429 st/pt |
| 1,000 lb/cup | 142.8571429 st/pt |
| 10,000 lb/cup | 1,428.571429 st/pt |
Reverse conversion: Stone per Pint to Pound per Cup
0.1428571429 st/pt × 7 = 1 lb/cup
0.1428571429 stones per pint = 1 pounds per cup.
pounds per cup = stones per pint × 7
For a page dedicated to this direction, see Stone per Pint to Pound per Cup.
Understanding the Pound per Cup (lb/cup)
Mass per volume density.
Understanding the Stone per Pint (st/pt)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many stones per pint are in 1 pound per cup?
1 pound per cup equals 0.1428571429 stones per pint, using the exact defined conversion factor rather than an estimate.
How do I convert pound per cup to stone per pint?
Multiply the pound per cup value by 0.1428571429. The converter above does this instantly to whatever precision you set.
How do I convert stone per pint back to pound per cup?
Use the reverse factor: 1 stone per pint equals 7 pounds per cup. You can also use the swap control in the converter above to flip the direction instantly.
What is a pound per cup?
Pound per Cup (lb/cup) is a unit of density.
What is a stone per pint?
Stone per Pint (st/pt) is a unit of density.
Is the pound per cup to stone per pint conversion exact?
Yes. Both pound per cup and stone per pint are defined by fixed standards rather than physical artifacts, so the factor of 0.1428571429 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.