Mass per volume density.
Pounds per Quart to Stones per Cubic Millimeter Converter — lb/qt to st/mm3
Convert Pound per Quart (lb/qt) to Stone per Cubic Millimeter (st/mm3) using the exact conversion factor (1 pound per quart = 7.547773e-8 stone per cubic millimeter). See the formula, worked examples, and conversion table.
Pounds per Quart to Stones per Cubic Millimeter 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 479.3057093 / 6.35029318e+9.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Pounds per Quart to Stones per Cubic Millimeter
Pound per Quart and Stone per Cubic Millimeter 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 millimeter = pounds per quart × 7.547773e-8
This factor comes from each unit's defined relationship to the category's base unit: 1 pound per quart equals 479.305709268 base units, and 1 stone per cubic millimeter equals 6350293180 base units, so dividing one by the other gives the direct pound per quart-to-stone per cubic millimeter factor of 7.547773e-8.
Simple example
1 lb/qt × 7.547773e-8 = 7.547773e-8 st/mm3
1 pound per quart = 7.547773e-8 stones per cubic millimeter.
Real-world example
1,000 lb/qt × 7.547773e-8 = 0.0000754777 st/mm3
1,000 pounds per quart = 0.0000754777 stones per cubic millimeter.
Conversion table
| Pound per Quart (lb/qt) | Stone per Cubic Millimeter (st/mm3) |
|---|---|
| 0.1 lb/qt | 7.547773e-9 st/mm3 |
| 1 lb/qt | 7.547773e-8 st/mm3 |
| 10 lb/qt | 7.547773e-7 st/mm3 |
| 100 lb/qt | 0.0000075478 st/mm3 |
| 1,000 lb/qt | 0.0000754777 st/mm3 |
| 10,000 lb/qt | 0.0007547773 st/mm3 |
Reverse conversion: Stone per Cubic Millimeter to Pound per Quart
7.547773e-8 st/mm3 × 13248941.24 = 1.00000001 lb/qt
7.547773e-8 stones per cubic millimeter = 1.00000001 pounds per quart.
pounds per quart = stones per cubic millimeter × 13248941.244
For a page dedicated to this direction, see Stone per Cubic Millimeter to Pound per Quart.
Understanding the Pound per Quart (lb/qt)
Mass per volume density.
Understanding the Stone per Cubic Millimeter (st/mm3)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many stones per cubic millimeter are in 1 pound per quart?
1 pound per quart equals 7.547773e-8 stones per cubic millimeter, using the exact defined conversion factor rather than an estimate.
How do I convert pound per quart to stone per cubic millimeter?
Multiply the pound per quart value by 7.547773e-8. The converter above does this instantly to whatever precision you set.
How do I convert stone per cubic millimeter back to pound per quart?
Use the reverse factor: 1 stone per cubic millimeter equals 13,248,941.24 pounds per quart. You can also use the swap control in the converter above to flip the direction instantly.
What is a pound per quart?
Pound per Quart (lb/qt) is a unit of density.
What is a stone per cubic millimeter?
Stone per Cubic Millimeter (st/mm3) is a unit of density.
Is the pound per quart to stone per cubic millimeter conversion exact?
Yes. Both pound per quart and stone per cubic millimeter are defined by fixed standards rather than physical artifacts, so the factor of 7.547773e-8 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.