Mass per volume density.
Pounds per Imperial gallon to Stones per Cubic yard Converter — lb/imp gal to st/yd3
Convert Pound per Imperial gallon (lb/imp gal) to Stone per Cubic yard (st/yd3) using the exact conversion factor (1 pound per imperial gallon = 12.0127541 stone per cubic yard). See the formula, worked examples, and conversion table.
Pounds 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 99.77637266 / 8.305869898.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Pounds per Imperial gallon to Stones per Cubic yard
Pound 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 = pounds per imperial gallon × 12.0127540996
This factor comes from each unit's defined relationship to the category's base unit: 1 pound per imperial gallon equals 99.7763726631 base units, and 1 stone per cubic yard equals 8.30586989761 base units, so dividing one by the other gives the direct pound per imperial gallon-to-stone per cubic yard factor of 12.0127540996.
Simple example
1 lb/imp gal × 12.0127541 = 12.0127541 st/yd3
1 pound per imperial gallon = 12.0127541 stones per cubic yard.
Real-world example
1,000 lb/imp gal × 12.0127541 = 12,012.7541 st/yd3
1,000 pounds per imperial gallon = 12,012.7541 stones per cubic yard.
Conversion table
| Pound per Imperial gallon (lb/imp gal) | Stone per Cubic yard (st/yd3) |
|---|---|
| 0.1 lb/imp gal | 1.20127541 st/yd3 |
| 1 lb/imp gal | 12.0127541 st/yd3 |
| 10 lb/imp gal | 120.127541 st/yd3 |
| 100 lb/imp gal | 1,201.27541 st/yd3 |
| 1,000 lb/imp gal | 12,012.7541 st/yd3 |
| 10,000 lb/imp gal | 120,127.541 st/yd3 |
Reverse conversion: Stone per Cubic yard to Pound per Imperial gallon
12.0127541 st/yd3 × 0.08324485723 = 1 lb/imp gal
12.0127541 stones per cubic yard = 1 pounds per imperial gallon.
pounds per imperial gallon = stones per cubic yard × 0.0832448572334
For a page dedicated to this direction, see Stone per Cubic yard to Pound per Imperial gallon.
Understanding the Pound per Imperial gallon (lb/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 pound per imperial gallon?
1 pound per imperial gallon equals 12.0127541 stones per cubic yard, using the exact defined conversion factor rather than an estimate.
How do I convert pound per imperial gallon to stone per cubic yard?
Multiply the pound per imperial gallon value by 12.0127541. The converter above does this instantly to whatever precision you set.
How do I convert stone per cubic yard back to pound per imperial gallon?
Use the reverse factor: 1 stone per cubic yard equals 0.0832448572 pounds per imperial gallon. You can also use the swap control in the converter above to flip the direction instantly.
What is a pound per imperial gallon?
Pound per Imperial gallon (lb/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 pound per imperial gallon to stone per cubic yard conversion exact?
Yes. Both pound per imperial gallon and stone per cubic yard are defined by fixed standards rather than physical artifacts, so the factor of 12.0127541 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.