Mass per volume density.
Stones per Cubic yard to Pounds per Quart Converter — st/yd3 to lb/qt
Convert Stone per Cubic yard (st/yd3) to Pound per Quart (lb/qt) using the exact conversion factor (1 stone per cubic yard = 0.0173289609 pound per quart). See the formula, worked examples, and conversion table.
Stones per Cubic yard to Pounds per Quart 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 8.305869898 / 479.3057093.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Stones per Cubic yard to Pounds per Quart
Stone per Cubic yard and Pound per Quart 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
pounds per quart = stones per cubic yard × 0.0173289609053
This factor comes from each unit's defined relationship to the category's base unit: 1 stone per cubic yard equals 8.30586989761 base units, and 1 pound per quart equals 479.305709268 base units, so dividing one by the other gives the direct stone per cubic yard-to-pound per quart factor of 0.0173289609053.
Simple example
1 st/yd3 × 0.01732896091 = 0.0173289609 lb/qt
1 stone per cubic yard = 0.0173289609 pounds per quart.
Real-world example
1,000 st/yd3 × 0.01732896091 = 17.32896091 lb/qt
1,000 stones per cubic yard = 17.32896091 pounds per quart.
Conversion table
| Stone per Cubic yard (st/yd3) | Pound per Quart (lb/qt) |
|---|---|
| 0.1 st/yd3 | 0.0017328961 lb/qt |
| 1 st/yd3 | 0.0173289609 lb/qt |
| 10 st/yd3 | 0.1732896091 lb/qt |
| 100 st/yd3 | 1.732896091 lb/qt |
| 1,000 st/yd3 | 17.32896091 lb/qt |
| 10,000 st/yd3 | 173.2896091 lb/qt |
Reverse conversion: Pound per Quart to Stone per Cubic yard
0.0173289609 lb/qt × 57.70686456 = 0.9999999997 st/yd3
0.0173289609 pounds per quart = 0.9999999997 stones per cubic yard.
stones per cubic yard = pounds per quart × 57.706864564
For a page dedicated to this direction, see Pound per Quart to Stone per Cubic yard.
Understanding the Stone per Cubic yard (st/yd3)
Mass per volume density.
Understanding the Pound per Quart (lb/qt)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many pounds per quart are in 1 stone per cubic yard?
1 stone per cubic yard equals 0.0173289609 pounds per quart, using the exact defined conversion factor rather than an estimate.
How do I convert stone per cubic yard to pound per quart?
Multiply the stone per cubic yard value by 0.01732896091. The converter above does this instantly to whatever precision you set.
How do I convert pound per quart back to stone per cubic yard?
Use the reverse factor: 1 pound per quart equals 57.70686456 stones per cubic yard. You can also use the swap control in the converter above to flip the direction instantly.
What is a stone per cubic yard?
Stone per Cubic yard (st/yd3) is a unit of density.
What is a pound per quart?
Pound per Quart (lb/qt) is a unit of density.
Is the stone per cubic yard to pound per quart conversion exact?
Yes. Both stone per cubic yard and pound per quart are defined by fixed standards rather than physical artifacts, so the factor of 0.01732896091 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.