Mass per volume density.
Stones per Teaspoon to Kilograms per Cubic yard Converter — st/tsp to kg/yd3
Convert Stone per Teaspoon (st/tsp) to Kilogram per Cubic yard (kg/yd3) using the exact conversion factor (1 stone per teaspoon = 985,032.4068 kilogram per cubic yard). See the formula, worked examples, conversion table, and common uses.
Stones per Teaspoon 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 1.28837375e+6 / 1.307950619.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Stones per Teaspoon to Kilograms per Cubic yard
Stone per Teaspoon 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 = stones per teaspoon × 985032.406794
This factor comes from each unit's defined relationship to the category's base unit: 1 stone per teaspoon equals 1288373.74651 base units, and 1 kilogram per cubic yard equals 1.30795061931 base units, so dividing one by the other gives the direct stone per teaspoon-to-kilogram per cubic yard factor of 985032.406794.
Simple example
1 st/tsp × 985032.4068 = 985,032.4068 kg/yd3
1 stone per teaspoon = 985,032.4068 kilograms per cubic yard.
Real-world example
1,000 st/tsp × 985032.4068 = 985,032,406.8 kg/yd3
1,000 stones per teaspoon = 985,032,406.8 kilograms per cubic yard.
Conversion table
| Stone per Teaspoon (st/tsp) | Kilogram per Cubic yard (kg/yd3) |
|---|---|
| 0.1 st/tsp | 98,503.24068 kg/yd3 |
| 1 st/tsp | 985,032.4068 kg/yd3 |
| 10 st/tsp | 9,850,324.068 kg/yd3 |
| 100 st/tsp | 98,503,240.68 kg/yd3 |
| 1,000 st/tsp | 985,032,406.8 kg/yd3 |
| 10,000 st/tsp | 9,850,324,068 kg/yd3 |
Reverse conversion: Kilogram per Cubic yard to Stone per Teaspoon
1 kg/yd3 × 0.000001015195026 = 0.0000010152 st/tsp
1 kilogram per cubic yard = 0.0000010152 stones per teaspoon.
stones per teaspoon = kilograms per cubic yard × 0.00000101519502618
For a page dedicated to this direction, see Kilogram per Cubic yard to Stone per Teaspoon.
Understanding the Stone per Teaspoon (st/tsp)
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 stone per teaspoon?
1 stone per teaspoon equals 985,032.4068 kilograms per cubic yard, using the exact defined conversion factor rather than an estimate.
How do I convert stone per teaspoon to kilogram per cubic yard?
Multiply the stone per teaspoon value by 985032.4068. The converter above does this instantly to whatever precision you set.
How do I convert kilogram per cubic yard back to stone per teaspoon?
Use the reverse factor: 1 kilogram per cubic yard equals 0.0000010152 stones per teaspoon. You can also use the swap control in the converter above to flip the direction instantly.
What is a stone per teaspoon?
Stone per Teaspoon (st/tsp) 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 stone per teaspoon to kilogram per cubic yard conversion exact?
Yes. Both stone per teaspoon and kilogram per cubic yard are defined by fixed standards rather than physical artifacts, so the factor of 985032.4068 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.