Mass per volume density.
Pounds per Cup to Stones per Cubic Meter Converter — lb/cup to st/m3
Convert Pound per Cup (lb/cup) to Stone per Cubic Meter (st/m3) using the exact conversion factor (1 pound per cup = 301.910917 stone per cubic meter). See the formula, worked examples, and conversion table.
Pounds per Cup to Stones per Cubic Meter 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 / 6.35029318.
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 Cubic Meter
Pound per Cup and Stone per Cubic Meter 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 cubic meter = pounds per cup × 301.910916981
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 cubic meter equals 6.35029318 base units, so dividing one by the other gives the direct pound per cup-to-stone per cubic meter factor of 301.910916981.
Simple example
1 lb/cup × 301.910917 = 301.910917 st/m3
1 pound per cup = 301.910917 stones per cubic meter.
Real-world example
1,000 lb/cup × 301.910917 = 301,910.917 st/m3
1,000 pounds per cup = 301,910.917 stones per cubic meter.
Conversion table
| Pound per Cup (lb/cup) | Stone per Cubic Meter (st/m3) |
|---|---|
| 0.1 lb/cup | 30.1910917 st/m3 |
| 1 lb/cup | 301.910917 st/m3 |
| 10 lb/cup | 3,019.10917 st/m3 |
| 100 lb/cup | 30,191.0917 st/m3 |
| 1,000 lb/cup | 301,910.917 st/m3 |
| 10,000 lb/cup | 3,019,109.17 st/m3 |
Reverse conversion: Stone per Cubic Meter to Pound per Cup
301.910917 st/m3 × 0.003312235311 = 1 lb/cup
301.910917 stones per cubic meter = 1 pounds per cup.
pounds per cup = stones per cubic meter × 0.003312235311
For a page dedicated to this direction, see Stone per Cubic Meter to Pound per Cup.
Understanding the Pound per Cup (lb/cup)
Mass per volume density.
Understanding the Stone per Cubic Meter (st/m3)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many stones per cubic meter are in 1 pound per cup?
1 pound per cup equals 301.910917 stones per cubic meter, using the exact defined conversion factor rather than an estimate.
How do I convert pound per cup to stone per cubic meter?
Multiply the pound per cup value by 301.910917. The converter above does this instantly to whatever precision you set.
How do I convert stone per cubic meter back to pound per cup?
Use the reverse factor: 1 stone per cubic meter equals 0.0033122353 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 cubic meter?
Stone per Cubic Meter (st/m3) is a unit of density.
Is the pound per cup to stone per cubic meter conversion exact?
Yes. Both pound per cup and stone per cubic meter are defined by fixed standards rather than physical artifacts, so the factor of 301.910917 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.