Mass per volume density.
Stones per Gallon to Grains per Cubic yard Converter — st/gal to gr/yd3
Convert Stone per Gallon (st/gal) to Grain per Cubic yard (gr/yd3) using the exact conversion factor (1 stone per gallon = 19,793,454.55 grain per cubic yard). See the formula, worked examples, and conversion table.
Stones per Gallon to Grains per Cubic yard 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 1677.569982 / 8.47537745e-5.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Stones per Gallon to Grains per Cubic yard
Stone per Gallon and Grain per Cubic yard 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
grains per cubic yard = stones per gallon × 19793454.5455
This factor comes from each unit's defined relationship to the category's base unit: 1 stone per gallon equals 1677.56998244 base units, and 1 grain per cubic yard equals 0.0000847537744654 base units, so dividing one by the other gives the direct stone per gallon-to-grain per cubic yard factor of 19793454.5455.
Simple example
1 st/gal × 19793454.55 = 19,793,454.55 gr/yd3
1 stone per gallon = 19,793,454.55 grains per cubic yard.
Real-world example
1,000 st/gal × 19793454.55 = 19,793,454,550 gr/yd3
1,000 stones per gallon = 19,793,454,550 grains per cubic yard.
Conversion table
| Stone per Gallon (st/gal) | Grain per Cubic yard (gr/yd3) |
|---|---|
| 0.1 st/gal | 1,979,345.455 gr/yd3 |
| 1 st/gal | 19,793,454.55 gr/yd3 |
| 10 st/gal | 197,934,545.5 gr/yd3 |
| 100 st/gal | 1,979,345,455 gr/yd3 |
| 1,000 st/gal | 19,793,454,550 gr/yd3 |
| 10,000 st/gal | 197,934,545,500 gr/yd3 |
Reverse conversion: Grain per Cubic yard to Stone per Gallon
1 gr/yd3 × 5.052175e-8 = 5.052175e-8 st/gal
1 grain per cubic yard = 5.052175e-8 stones per gallon.
stones per gallon = grains per cubic yard × 5.052175e-8
For a page dedicated to this direction, see Grain per Cubic yard to Stone per Gallon.
Understanding the Stone per Gallon (st/gal)
Mass per volume density.
Understanding the Grain per Cubic yard (gr/yd3)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many grains per cubic yard are in 1 stone per gallon?
1 stone per gallon equals 19,793,454.55 grains per cubic yard, using the exact defined conversion factor rather than an estimate.
How do I convert stone per gallon to grain per cubic yard?
Multiply the stone per gallon value by 19793454.55. The converter above does this instantly to whatever precision you set.
How do I convert grain per cubic yard back to stone per gallon?
Use the reverse factor: 1 grain per cubic yard equals 5.052175e-8 stones per gallon. You can also use the swap control in the converter above to flip the direction instantly.
What is a stone per gallon?
Stone per Gallon (st/gal) is a unit of density.
What is a grain per cubic yard?
Grain per Cubic yard (gr/yd3) is a unit of density.
Is the stone per gallon to grain per cubic yard conversion exact?
Yes. Both stone per gallon and grain per cubic yard are defined by fixed standards rather than physical artifacts, so the factor of 19793454.55 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.