Mass per volume density.
Pounds per Quart to Kilograms per Cubic yard Converter — lb/qt to kg/yd3
Convert Pound per Quart (lb/qt) to Kilogram per Cubic yard (kg/yd3) using the exact conversion factor (1 pound per quart = 366.4555085 kilogram per cubic yard). See the formula, worked examples, conversion table, and common uses.
Pounds per Quart to Kilograms 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 479.3057093 / 1.307950619.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Pounds per Quart to Kilograms per Cubic yard
Pound per Quart and Kilogram 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
kilograms per cubic yard = pounds per quart × 366.45550848
This factor comes from each unit's defined relationship to the category's base unit: 1 pound per quart equals 479.305709268 base units, and 1 kilogram per cubic yard equals 1.30795061931 base units, so dividing one by the other gives the direct pound per quart-to-kilogram per cubic yard factor of 366.45550848.
Simple example
1 lb/qt × 366.4555085 = 366.4555085 kg/yd3
1 pound per quart = 366.4555085 kilograms per cubic yard.
Real-world example
1,000 lb/qt × 366.4555085 = 366,455.5085 kg/yd3
1,000 pounds per quart = 366,455.5085 kilograms per cubic yard.
Conversion table
| Pound per Quart (lb/qt) | Kilogram per Cubic yard (kg/yd3) |
|---|---|
| 0.1 lb/qt | 36.64555085 kg/yd3 |
| 1 lb/qt | 366.4555085 kg/yd3 |
| 10 lb/qt | 3,664.555085 kg/yd3 |
| 100 lb/qt | 36,645.55085 kg/yd3 |
| 1,000 lb/qt | 366,455.5085 kg/yd3 |
| 10,000 lb/qt | 3,664,555.085 kg/yd3 |
Reverse conversion: Kilogram per Cubic yard to Pound per Quart
366.4555085 kg/yd3 × 0.00272884423 = 1 lb/qt
366.4555085 kilograms per cubic yard = 1 pounds per quart.
pounds per quart = kilograms per cubic yard × 0.00272884423036
For a page dedicated to this direction, see Kilogram per Cubic yard to Pound per Quart.
Understanding the Pound per Quart (lb/qt)
Mass per volume density.
Understanding the Kilogram per Cubic yard
Kilogram per Cubic yard (kg/yd3) measures density. A mathematically valid way to express bulk material density in kilograms per cubic yard. It is classified as a mixed metric/US customary density unit.
Uses of the Kilogram per Cubic yard today
- Can be used to express the density of bulk construction materials such as gravel, soil, or aggregate — in practice, US construction and landscaping references more commonly express this as tons per cubic yard or pounds per cubic foot
Kilogram per Cubic yard — sources
- US construction and landscaping material-estimating references — Bulk material weight by volume is typically reported in tons per cubic yard in US construction and landscaping contexts.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many kilograms per cubic yard are in 1 pound per quart?
1 pound per quart equals 366.4555085 kilograms per cubic yard, using the exact defined conversion factor rather than an estimate.
How do I convert pound per quart to kilogram per cubic yard?
Multiply the pound per quart value by 366.4555085. The converter above does this instantly to whatever precision you set.
How do I convert kilogram per cubic yard back to pound per quart?
Use the reverse factor: 1 kilogram per cubic yard equals 0.0027288442 pounds per quart. You can also use the swap control in the converter above to flip the direction instantly.
What is a pound per quart?
Pound per Quart (lb/qt) is a unit of density.
What is a kilogram per cubic yard?
Kilogram per Cubic yard (kg/yd3) measures density. A mathematically valid way to express bulk material density in kilograms per cubic yard. It is classified as a mixed metric/US customary density unit.
Is the pound per quart to kilogram per cubic yard conversion exact?
Yes. Both pound per quart and kilogram per cubic yard are defined by fixed standards rather than physical artifacts, so the factor of 366.4555085 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.