Mass per volume density.
Pounds per Cubic Millimeter to Stones per Cubic Centimeter Converter — lb/mm3 to st/cm3
Convert Pound per Cubic Millimeter (lb/mm3) to Stone per Cubic Centimeter (st/cm3) using the exact conversion factor (1 pound per cubic millimeter = 71.42857143 stone per cubic centimeter). See the formula, worked examples, and conversion table.
Pounds per Cubic Millimeter to Stones per Cubic Centimeter 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 4.5359237e+8 / 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 Cubic Millimeter to Stones per Cubic Centimeter
Pound per Cubic Millimeter and Stone per Cubic Centimeter 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 centimeter = pounds per cubic millimeter × 71.4285714286
This factor comes from each unit's defined relationship to the category's base unit: 1 pound per cubic millimeter equals 453592370 base units, and 1 stone per cubic centimeter equals 6350293.18 base units, so dividing one by the other gives the direct pound per cubic millimeter-to-stone per cubic centimeter factor of 71.4285714286.
Simple example
1 lb/mm3 × 71.42857143 = 71.42857143 st/cm3
1 pound per cubic millimeter = 71.42857143 stones per cubic centimeter.
Real-world example
1,000 lb/mm3 × 71.42857143 = 71,428.57143 st/cm3
1,000 pounds per cubic millimeter = 71,428.57143 stones per cubic centimeter.
Conversion table
| Pound per Cubic Millimeter (lb/mm3) | Stone per Cubic Centimeter (st/cm3) |
|---|---|
| 0.1 lb/mm3 | 7.142857143 st/cm3 |
| 1 lb/mm3 | 71.42857143 st/cm3 |
| 10 lb/mm3 | 714.2857143 st/cm3 |
| 100 lb/mm3 | 7,142.857143 st/cm3 |
| 1,000 lb/mm3 | 71,428.57143 st/cm3 |
| 10,000 lb/mm3 | 714,285.7143 st/cm3 |
Reverse conversion: Stone per Cubic Centimeter to Pound per Cubic Millimeter
71.42857143 st/cm3 × 0.014 = 1 lb/mm3
71.42857143 stones per cubic centimeter = 1 pounds per cubic millimeter.
pounds per cubic millimeter = stones per cubic centimeter × 0.014
For a page dedicated to this direction, see Stone per Cubic Centimeter to Pound per Cubic Millimeter.
Understanding the Pound per Cubic Millimeter (lb/mm3)
Mass per volume density.
Understanding the Stone per Cubic Centimeter (st/cm3)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many stones per cubic centimeter are in 1 pound per cubic millimeter?
1 pound per cubic millimeter equals 71.42857143 stones per cubic centimeter, using the exact defined conversion factor rather than an estimate.
How do I convert pound per cubic millimeter to stone per cubic centimeter?
Multiply the pound per cubic millimeter value by 71.42857143. The converter above does this instantly to whatever precision you set.
How do I convert stone per cubic centimeter back to pound per cubic millimeter?
Use the reverse factor: 1 stone per cubic centimeter equals 0.014 pounds per cubic millimeter. You can also use the swap control in the converter above to flip the direction instantly.
What is a pound per cubic millimeter?
Pound per Cubic Millimeter (lb/mm3) is a unit of density.
What is a stone per cubic centimeter?
Stone per Cubic Centimeter (st/cm3) is a unit of density.
Is the pound per cubic millimeter to stone per cubic centimeter conversion exact?
Yes. Both pound per cubic millimeter and stone per cubic centimeter are defined by fixed standards rather than physical artifacts, so the factor of 71.42857143 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.