Mass per volume density.
Stones per Imperial gallon to Stones per Cubic yard Converter — st/imp gal to st/yd3
Convert Stone per Imperial gallon (st/imp gal) to Stone per Cubic yard (st/yd3) using the exact conversion factor (1 stone per imperial gallon = 168.1785574 stone per cubic yard). See the formula, worked examples, and conversion table.
Stones per Imperial gallon to Stones 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 1396.869217 / 8.305869898.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Stones per Imperial gallon to Stones per Cubic yard
Stone per Imperial gallon and Stone 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
stones per cubic yard = stones per imperial gallon × 168.178557394
This factor comes from each unit's defined relationship to the category's base unit: 1 stone per imperial gallon equals 1396.86921728 base units, and 1 stone per cubic yard equals 8.30586989761 base units, so dividing one by the other gives the direct stone per imperial gallon-to-stone per cubic yard factor of 168.178557394.
Simple example
1 st/imp gal × 168.1785574 = 168.1785574 st/yd3
1 stone per imperial gallon = 168.1785574 stones per cubic yard.
Real-world example
1,000 st/imp gal × 168.1785574 = 168,178.5574 st/yd3
1,000 stones per imperial gallon = 168,178.5574 stones per cubic yard.
Conversion table
| Stone per Imperial gallon (st/imp gal) | Stone per Cubic yard (st/yd3) |
|---|---|
| 0.1 st/imp gal | 16.81785574 st/yd3 |
| 1 st/imp gal | 168.1785574 st/yd3 |
| 10 st/imp gal | 1,681.785574 st/yd3 |
| 100 st/imp gal | 16,817.85574 st/yd3 |
| 1,000 st/imp gal | 168,178.5574 st/yd3 |
| 10,000 st/imp gal | 1,681,785.574 st/yd3 |
Reverse conversion: Stone per Cubic yard to Stone per Imperial gallon
168.1785574 st/yd3 × 0.005946061231 = 1 st/imp gal
168.1785574 stones per cubic yard = 1 stones per imperial gallon.
stones per imperial gallon = stones per cubic yard × 0.00594606123096
For a page dedicated to this direction, see Stone per Cubic yard to Stone per Imperial gallon.
Understanding the Stone per Imperial gallon (st/imp gal)
Mass per volume density.
Understanding the Stone per Cubic yard (st/yd3)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many stones per cubic yard are in 1 stone per imperial gallon?
1 stone per imperial gallon equals 168.1785574 stones per cubic yard, using the exact defined conversion factor rather than an estimate.
How do I convert stone per imperial gallon to stone per cubic yard?
Multiply the stone per imperial gallon value by 168.1785574. The converter above does this instantly to whatever precision you set.
How do I convert stone per cubic yard back to stone per imperial gallon?
Use the reverse factor: 1 stone per cubic yard equals 0.0059460612 stones per imperial gallon. You can also use the swap control in the converter above to flip the direction instantly.
What is a stone per imperial gallon?
Stone per Imperial gallon (st/imp gal) is a unit of density.
What is a stone per cubic yard?
Stone per Cubic yard (st/yd3) is a unit of density.
Is the stone per imperial gallon to stone per cubic yard conversion exact?
Yes. Both stone per imperial gallon and stone per cubic yard are defined by fixed standards rather than physical artifacts, so the factor of 168.1785574 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.