Mass per volume density.
Slugs per Imperial gallon to Stones per Cubic yard Converter — slug/imp gal to st/yd3
Convert Slug per Imperial gallon (slug/imp gal) to Stone per Cubic yard (st/yd3) using the exact conversion factor (1 slug per imperial gallon = 386.4989337 stone per cubic yard). See the formula, worked examples, and conversion table.
Slugs 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 3210.209859 / 8.305869898.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Slugs per Imperial gallon to Stones per Cubic yard
Slug 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 = slugs per imperial gallon × 386.498933696
This factor comes from each unit's defined relationship to the category's base unit: 1 slug per imperial gallon equals 3210.20985885 base units, and 1 stone per cubic yard equals 8.30586989761 base units, so dividing one by the other gives the direct slug per imperial gallon-to-stone per cubic yard factor of 386.498933696.
Simple example
1 slug/imp gal × 386.4989337 = 386.4989337 st/yd3
1 slug per imperial gallon = 386.4989337 stones per cubic yard.
Real-world example
1,000 slug/imp gal × 386.4989337 = 386,498.9337 st/yd3
1,000 slugs per imperial gallon = 386,498.9337 stones per cubic yard.
Conversion table
| Slug per Imperial gallon (slug/imp gal) | Stone per Cubic yard (st/yd3) |
|---|---|
| 0.1 slug/imp gal | 38.64989337 st/yd3 |
| 1 slug/imp gal | 386.4989337 st/yd3 |
| 10 slug/imp gal | 3,864.989337 st/yd3 |
| 100 slug/imp gal | 38,649.89337 st/yd3 |
| 1,000 slug/imp gal | 386,498.9337 st/yd3 |
| 10,000 slug/imp gal | 3,864,989.337 st/yd3 |
Reverse conversion: Stone per Cubic yard to Slug per Imperial gallon
386.4989337 st/yd3 × 0.00258732926 = 1 slug/imp gal
386.4989337 stones per cubic yard = 1 slugs per imperial gallon.
slugs per imperial gallon = stones per cubic yard × 0.00258732925971
For a page dedicated to this direction, see Stone per Cubic yard to Slug per Imperial gallon.
Understanding the Slug per Imperial gallon (slug/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 slug per imperial gallon?
1 slug per imperial gallon equals 386.4989337 stones per cubic yard, using the exact defined conversion factor rather than an estimate.
How do I convert slug per imperial gallon to stone per cubic yard?
Multiply the slug per imperial gallon value by 386.4989337. The converter above does this instantly to whatever precision you set.
How do I convert stone per cubic yard back to slug per imperial gallon?
Use the reverse factor: 1 stone per cubic yard equals 0.0025873293 slugs per imperial gallon. You can also use the swap control in the converter above to flip the direction instantly.
What is a slug per imperial gallon?
Slug per Imperial gallon (slug/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 slug per imperial gallon to stone per cubic yard conversion exact?
Yes. Both slug per imperial gallon and stone per cubic yard are defined by fixed standards rather than physical artifacts, so the factor of 386.4989337 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.