Mass per volume density.
Stones per Cubic yard to Pounds per Cubic Meter Converter — st/yd3 to lb/m3
Convert Stone per Cubic yard (st/yd3) to Pound per Cubic Meter (lb/m3) using the exact conversion factor (1 stone per cubic yard = 18.31130867 pound per cubic meter). See the formula, worked examples, and conversion table.
Stones per Cubic yard to Pounds per Cubic Meter 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 8.305869898 / 0.45359237.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Stones per Cubic yard to Pounds per Cubic Meter
Stone per Cubic yard and Pound per Cubic Meter 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 meter = stones per cubic yard × 18.3113086704
This factor comes from each unit's defined relationship to the category's base unit: 1 stone per cubic yard equals 8.30586989761 base units, and 1 pound per cubic meter equals 0.45359237 base units, so dividing one by the other gives the direct stone per cubic yard-to-pound per cubic meter factor of 18.3113086704.
Simple example
1 st/yd3 × 18.31130867 = 18.31130867 lb/m3
1 stone per cubic yard = 18.31130867 pounds per cubic meter.
Real-world example
1,000 st/yd3 × 18.31130867 = 18,311.30867 lb/m3
1,000 stones per cubic yard = 18,311.30867 pounds per cubic meter.
Conversion table
| Stone per Cubic yard (st/yd3) | Pound per Cubic Meter (lb/m3) |
|---|---|
| 0.1 st/yd3 | 1.831130867 lb/m3 |
| 1 st/yd3 | 18.31130867 lb/m3 |
| 10 st/yd3 | 183.1130867 lb/m3 |
| 100 st/yd3 | 1,831.130867 lb/m3 |
| 1,000 st/yd3 | 18,311.30867 lb/m3 |
| 10,000 st/yd3 | 183,113.0867 lb/m3 |
Reverse conversion: Pound per Cubic Meter to Stone per Cubic yard
18.31130867 lb/m3 × 0.05461106128 = 1 st/yd3
18.31130867 pounds per cubic meter = 1 stones per cubic yard.
stones per cubic yard = pounds per cubic meter × 0.0546110612846
For a page dedicated to this direction, see Pound per Cubic Meter to Stone per Cubic yard.
Understanding the Stone per Cubic yard (st/yd3)
Mass per volume density.
Understanding the Pound per Cubic Meter (lb/m3)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many pounds per cubic meter are in 1 stone per cubic yard?
1 stone per cubic yard equals 18.31130867 pounds per cubic meter, using the exact defined conversion factor rather than an estimate.
How do I convert stone per cubic yard to pound per cubic meter?
Multiply the stone per cubic yard value by 18.31130867. The converter above does this instantly to whatever precision you set.
How do I convert pound per cubic meter back to stone per cubic yard?
Use the reverse factor: 1 pound per cubic meter equals 0.0546110613 stones per cubic yard. You can also use the swap control in the converter above to flip the direction instantly.
What is a stone per cubic yard?
Stone per Cubic yard (st/yd3) is a unit of density.
What is a pound per cubic meter?
Pound per Cubic Meter (lb/m3) is a unit of density.
Is the stone per cubic yard to pound per cubic meter conversion exact?
Yes. Both stone per cubic yard and pound per cubic meter are defined by fixed standards rather than physical artifacts, so the factor of 18.31130867 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.