Mass per volume density.
Grains per Cubic yard to Stones per Quart Converter — gr/yd3 to st/qt
Convert Grain per Cubic yard (gr/yd3) to Stone per Quart (st/qt) using the exact conversion factor (1 grain per cubic yard = 1.263044e-8 stone per quart). See the formula, worked examples, and conversion table.
Grains per Cubic yard to Stones 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 8.47537745e-5 / 6710.27993.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Grains per Cubic yard to Stones per Quart
Grain per Cubic yard and Stone 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
stones per quart = grains per cubic yard × 1.263044e-8
This factor comes from each unit's defined relationship to the category's base unit: 1 grain per cubic yard equals 0.0000847537744654 base units, and 1 stone per quart equals 6710.27992975 base units, so dividing one by the other gives the direct grain per cubic yard-to-stone per quart factor of 1.263044e-8.
Simple example
1 gr/yd3 × 1.263044e-8 = 1.263044e-8 st/qt
1 grain per cubic yard = 1.263044e-8 stones per quart.
Real-world example
1,000 gr/yd3 × 1.263044e-8 = 0.0000126304 st/qt
1,000 grains per cubic yard = 0.0000126304 stones per quart.
Conversion table
| Grain per Cubic yard (gr/yd3) | Stone per Quart (st/qt) |
|---|---|
| 0.1 gr/yd3 | 1.263044e-9 st/qt |
| 1 gr/yd3 | 1.263044e-8 st/qt |
| 10 gr/yd3 | 1.263044e-7 st/qt |
| 100 gr/yd3 | 0.000001263 st/qt |
| 1,000 gr/yd3 | 0.0000126304 st/qt |
| 10,000 gr/yd3 | 0.0001263044 st/qt |
Reverse conversion: Stone per Quart to Grain per Cubic yard
1.263044e-8 st/qt × 79173818.18 = 1.00000016 gr/yd3
1.263044e-8 stones per quart = 1.00000016 grains per cubic yard.
grains per cubic yard = stones per quart × 79173818.1818
For a page dedicated to this direction, see Stone per Quart to Grain per Cubic yard.
Understanding the Grain per Cubic yard (gr/yd3)
Mass per volume density.
Understanding the Stone per Quart (st/qt)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many stones per quart are in 1 grain per cubic yard?
1 grain per cubic yard equals 1.263044e-8 stones per quart, using the exact defined conversion factor rather than an estimate.
How do I convert grain per cubic yard to stone per quart?
Multiply the grain per cubic yard value by 1.263044e-8. The converter above does this instantly to whatever precision you set.
How do I convert stone per quart back to grain per cubic yard?
Use the reverse factor: 1 stone per quart equals 79,173,818.18 grains per cubic yard. You can also use the swap control in the converter above to flip the direction instantly.
What is a grain per cubic yard?
Grain per Cubic yard (gr/yd3) is a unit of density.
What is a stone per quart?
Stone per Quart (st/qt) is a unit of density.
Is the grain per cubic yard to stone per quart conversion exact?
Yes. Both grain per cubic yard and stone per quart are defined by fixed standards rather than physical artifacts, so the factor of 1.263044e-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.