Mass per volume density.
Stones per Cup to Megagrams per Cubic yard Converter — st/cup to Mg/yd3
Convert Stone per Cup (st/cup) to Megagram per Cubic yard (Mg/yd3) using the exact conversion factor (1 stone per cup = 20.52150847 megagram per cubic yard). See the formula, worked examples, and conversion table.
Stones per Cup to Megagrams 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 26841.11972 / 1307.950619.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Stones per Cup to Megagrams per Cubic yard
Stone per Cup and Megagram 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
megagrams per cubic yard = stones per cup × 20.5215084749
This factor comes from each unit's defined relationship to the category's base unit: 1 stone per cup equals 26841.119719 base units, and 1 megagram per cubic yard equals 1307.95061931 base units, so dividing one by the other gives the direct stone per cup-to-megagram per cubic yard factor of 20.5215084749.
Simple example
1 st/cup × 20.52150847 = 20.52150847 Mg/yd3
1 stone per cup = 20.52150847 megagrams per cubic yard.
Real-world example
1,000 st/cup × 20.52150847 = 20,521.50847 Mg/yd3
1,000 stones per cup = 20,521.50847 megagrams per cubic yard.
Conversion table
| Stone per Cup (st/cup) | Megagram per Cubic yard (Mg/yd3) |
|---|---|
| 0.1 st/cup | 2.052150847 Mg/yd3 |
| 1 st/cup | 20.52150847 Mg/yd3 |
| 10 st/cup | 205.2150847 Mg/yd3 |
| 100 st/cup | 2,052.150847 Mg/yd3 |
| 1,000 st/cup | 20,521.50847 Mg/yd3 |
| 10,000 st/cup | 205,215.0847 Mg/yd3 |
Reverse conversion: Megagram per Cubic yard to Stone per Cup
20.52150847 Mg/yd3 × 0.04872936126 = 0.9999999998 st/cup
20.52150847 megagrams per cubic yard = 0.9999999998 stones per cup.
stones per cup = megagrams per cubic yard × 0.0487293612565
For a page dedicated to this direction, see Megagram per Cubic yard to Stone per Cup.
Understanding the Stone per Cup (st/cup)
Mass per volume density.
Understanding the Megagram per Cubic yard (Mg/yd3)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many megagrams per cubic yard are in 1 stone per cup?
1 stone per cup equals 20.52150847 megagrams per cubic yard, using the exact defined conversion factor rather than an estimate.
How do I convert stone per cup to megagram per cubic yard?
Multiply the stone per cup value by 20.52150847. The converter above does this instantly to whatever precision you set.
How do I convert megagram per cubic yard back to stone per cup?
Use the reverse factor: 1 megagram per cubic yard equals 0.0487293613 stones per cup. You can also use the swap control in the converter above to flip the direction instantly.
What is a stone per cup?
Stone per Cup (st/cup) is a unit of density.
What is a megagram per cubic yard?
Megagram per Cubic yard (Mg/yd3) is a unit of density.
Is the stone per cup to megagram per cubic yard conversion exact?
Yes. Both stone per cup and megagram per cubic yard are defined by fixed standards rather than physical artifacts, so the factor of 20.52150847 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.