Mass per volume density.
Pounds per Imperial gallon to Pounds per Cubic yard Converter — lb/imp gal to lb/yd3
Convert Pound per Imperial gallon (lb/imp gal) to Pound per Cubic yard (lb/yd3) using the exact conversion factor (1 pound per imperial gallon = 168.1785574 pound per cubic yard). See the formula, worked examples, and conversion table.
Pounds per Imperial gallon to Pounds 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 / 0.5932764213.
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 Pounds per Cubic yard
Pound per Imperial gallon and Pound 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
pounds per cubic yard = pounds per imperial gallon × 168.178557394
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 pound per cubic yard equals 0.593276421258 base units, so dividing one by the other gives the direct pound per imperial gallon-to-pound per cubic yard factor of 168.178557394.
Simple example
1 lb/imp gal × 168.1785574 = 168.1785574 lb/yd3
1 pound per imperial gallon = 168.1785574 pounds per cubic yard.
Real-world example
1,000 lb/imp gal × 168.1785574 = 168,178.5574 lb/yd3
1,000 pounds per imperial gallon = 168,178.5574 pounds per cubic yard.
Conversion table
| Pound per Imperial gallon (lb/imp gal) | Pound per Cubic yard (lb/yd3) |
|---|---|
| 0.1 lb/imp gal | 16.81785574 lb/yd3 |
| 1 lb/imp gal | 168.1785574 lb/yd3 |
| 10 lb/imp gal | 1,681.785574 lb/yd3 |
| 100 lb/imp gal | 16,817.85574 lb/yd3 |
| 1,000 lb/imp gal | 168,178.5574 lb/yd3 |
| 10,000 lb/imp gal | 1,681,785.574 lb/yd3 |
Reverse conversion: Pound per Cubic yard to Pound per Imperial gallon
168.1785574 lb/yd3 × 0.005946061231 = 1 lb/imp gal
168.1785574 pounds per cubic yard = 1 pounds per imperial gallon.
pounds per imperial gallon = pounds per cubic yard × 0.00594606123096
For a page dedicated to this direction, see Pound per Cubic yard to Pound per Imperial gallon.
Understanding the Pound per Imperial gallon (lb/imp gal)
Mass per volume density.
Understanding the Pound per Cubic yard (lb/yd3)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many pounds per cubic yard are in 1 pound per imperial gallon?
1 pound per imperial gallon equals 168.1785574 pounds per cubic yard, using the exact defined conversion factor rather than an estimate.
How do I convert pound per imperial gallon to pound per cubic yard?
Multiply the pound per imperial gallon value by 168.1785574. The converter above does this instantly to whatever precision you set.
How do I convert pound per cubic yard back to pound per imperial gallon?
Use the reverse factor: 1 pound per cubic yard equals 0.0059460612 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 pound per cubic yard?
Pound per Cubic yard (lb/yd3) is a unit of density.
Is the pound per imperial gallon to pound per cubic yard conversion exact?
Yes. Both pound per imperial gallon and pound 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.