Mass per volume density.
Megagrams per Gallon to Stones per Cubic yard Converter — Mg/gal to st/yd3
Convert Megagram per Gallon (Mg/gal) to Stone per Cubic yard (st/yd3) using the exact conversion factor (1 megagram per gallon = 31,805.46476 stone per cubic yard). See the formula, worked examples, and conversion table.
Megagrams per Gallon 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 264172.0524 / 8.305869898.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Megagrams per Gallon to Stones per Cubic yard
Megagram per Gallon 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 = megagrams per gallon × 31805.4647634
This factor comes from each unit's defined relationship to the category's base unit: 1 megagram per gallon equals 264172.052358 base units, and 1 stone per cubic yard equals 8.30586989761 base units, so dividing one by the other gives the direct megagram per gallon-to-stone per cubic yard factor of 31805.4647634.
Simple example
1 Mg/gal × 31805.46476 = 31,805.46476 st/yd3
1 megagram per gallon = 31,805.46476 stones per cubic yard.
Real-world example
1,000 Mg/gal × 31805.46476 = 31,805,464.76 st/yd3
1,000 megagrams per gallon = 31,805,464.76 stones per cubic yard.
Conversion table
| Megagram per Gallon (Mg/gal) | Stone per Cubic yard (st/yd3) |
|---|---|
| 0.1 Mg/gal | 3,180.546476 st/yd3 |
| 1 Mg/gal | 31,805.46476 st/yd3 |
| 10 Mg/gal | 318,054.6476 st/yd3 |
| 100 Mg/gal | 3,180,546.476 st/yd3 |
| 1,000 Mg/gal | 31,805,464.76 st/yd3 |
| 10,000 Mg/gal | 318,054,647.6 st/yd3 |
Reverse conversion: Stone per Cubic yard to Megagram per Gallon
1 st/yd3 × 0.00003144113779 = 0.0000314411 Mg/gal
1 stone per cubic yard = 0.0000314411 megagrams per gallon.
megagrams per gallon = stones per cubic yard × 0.0000314411377868
For a page dedicated to this direction, see Stone per Cubic yard to Megagram per Gallon.
Understanding the Megagram per Gallon (Mg/gal)
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 megagram per gallon?
1 megagram per gallon equals 31,805.46476 stones per cubic yard, using the exact defined conversion factor rather than an estimate.
How do I convert megagram per gallon to stone per cubic yard?
Multiply the megagram per gallon value by 31805.46476. The converter above does this instantly to whatever precision you set.
How do I convert stone per cubic yard back to megagram per gallon?
Use the reverse factor: 1 stone per cubic yard equals 0.0000314411 megagrams per gallon. You can also use the swap control in the converter above to flip the direction instantly.
What is a megagram per gallon?
Megagram per Gallon (Mg/gal) 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 megagram per gallon to stone per cubic yard conversion exact?
Yes. Both megagram per gallon and stone per cubic yard are defined by fixed standards rather than physical artifacts, so the factor of 31805.46476 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.