Mass per volume density.
Stones per Cubic foot to Stones per Cubic yard Converter — st/ft3 to st/yd3
Convert Stone per Cubic foot (st/ft3) to Stone per Cubic yard (st/yd3) using the exact conversion factor (1 stone per cubic foot = 27 stone per cubic yard). See the formula, worked examples, and conversion table.
Stones per Cubic foot 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 224.2584872 / 8.305869898.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Stones per Cubic foot to Stones per Cubic yard
Stone per Cubic foot 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 = stones per cubic foot × 27
This factor comes from each unit's defined relationship to the category's base unit: 1 stone per cubic foot equals 224.258487235 base units, and 1 stone per cubic yard equals 8.30586989761 base units, so dividing one by the other gives the direct stone per cubic foot-to-stone per cubic yard factor of 27.
Simple example
1 st/ft3 × 27 = 27 st/yd3
1 stone per cubic foot = 27 stones per cubic yard.
Real-world example
1,000 st/ft3 × 27 = 27,000 st/yd3
1,000 stones per cubic foot = 27,000 stones per cubic yard.
Conversion table
| Stone per Cubic foot (st/ft3) | Stone per Cubic yard (st/yd3) |
|---|---|
| 0.1 st/ft3 | 2.7 st/yd3 |
| 1 st/ft3 | 27 st/yd3 |
| 10 st/ft3 | 270 st/yd3 |
| 100 st/ft3 | 2,700 st/yd3 |
| 1,000 st/ft3 | 27,000 st/yd3 |
| 10,000 st/ft3 | 270,000 st/yd3 |
Reverse conversion: Stone per Cubic yard to Stone per Cubic foot
27 st/yd3 × 0.03703703704 = 1 st/ft3
27 stones per cubic yard = 1 stones per cubic foot.
stones per cubic foot = stones per cubic yard × 0.037037037037
For a page dedicated to this direction, see Stone per Cubic yard to Stone per Cubic foot.
Understanding the Stone per Cubic foot (st/ft3)
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 stone per cubic foot?
1 stone per cubic foot equals 27 stones per cubic yard, using the exact defined conversion factor rather than an estimate.
How do I convert stone per cubic foot to stone per cubic yard?
Multiply the stone per cubic foot value by 27. The converter above does this instantly to whatever precision you set.
How do I convert stone per cubic yard back to stone per cubic foot?
Use the reverse factor: 1 stone per cubic yard equals 0.037037037 stones per cubic foot. You can also use the swap control in the converter above to flip the direction instantly.
What is a stone per cubic foot?
Stone per Cubic foot (st/ft3) 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 stone per cubic foot to stone per cubic yard conversion exact?
Yes. Both stone per cubic foot and stone per cubic yard are defined by fixed standards rather than physical artifacts, so the factor of 27 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.