Mass per volume density.
Pounds per Cup to Stones per Milliliter Converter — lb/cup to st/mL
Convert Pound per Cup (lb/cup) to Stone per Milliliter (st/mL) using the exact conversion factor (1 pound per cup = 0.0003019109 stone per milliliter). See the formula, worked examples, and conversion table.
Pounds per Cup to Stones per Milliliter 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 / 6.35029318e+6.
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 Milliliter
Pound per Cup and Stone per Milliliter 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 milliliter = pounds per cup × 0.000301910916981
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 milliliter equals 6350293.18 base units, so dividing one by the other gives the direct pound per cup-to-stone per milliliter factor of 0.000301910916981.
Simple example
1 lb/cup × 0.000301910917 = 0.0003019109 st/mL
1 pound per cup = 0.0003019109 stones per milliliter.
Real-world example
1,000 lb/cup × 0.000301910917 = 0.301910917 st/mL
1,000 pounds per cup = 0.301910917 stones per milliliter.
Conversion table
| Pound per Cup (lb/cup) | Stone per Milliliter (st/mL) |
|---|---|
| 0.1 lb/cup | 0.0000301911 st/mL |
| 1 lb/cup | 0.0003019109 st/mL |
| 10 lb/cup | 0.0030191092 st/mL |
| 100 lb/cup | 0.0301910917 st/mL |
| 1,000 lb/cup | 0.301910917 st/mL |
| 10,000 lb/cup | 3.01910917 st/mL |
Reverse conversion: Stone per Milliliter to Pound per Cup
0.0003019109 st/mL × 3312.235311 = 0.9999999438 lb/cup
0.0003019109 stones per milliliter = 0.9999999438 pounds per cup.
pounds per cup = stones per milliliter × 3312.235311
For a page dedicated to this direction, see Stone per Milliliter to Pound per Cup.
Understanding the Pound per Cup (lb/cup)
Mass per volume density.
Understanding the Stone per Milliliter (st/mL)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many stones per milliliter are in 1 pound per cup?
1 pound per cup equals 0.0003019109 stones per milliliter, using the exact defined conversion factor rather than an estimate.
How do I convert pound per cup to stone per milliliter?
Multiply the pound per cup value by 0.000301910917. The converter above does this instantly to whatever precision you set.
How do I convert stone per milliliter back to pound per cup?
Use the reverse factor: 1 stone per milliliter equals 3,312.235311 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 milliliter?
Stone per Milliliter (st/mL) is a unit of density.
Is the pound per cup to stone per milliliter conversion exact?
Yes. Both pound per cup and stone per milliliter are defined by fixed standards rather than physical artifacts, so the factor of 0.000301910917 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.