Mass per volume density.
Megagrams per Cubic yard to Stones per Gallon Converter — Mg/yd3 to st/gal
Convert Megagram per Cubic yard (Mg/yd3) to Stone per Gallon (st/gal) using the exact conversion factor (1 megagram per cubic yard = 0.7796697801 stone per gallon). See the formula, worked examples, and conversion table.
Megagrams per Cubic yard to Stones per Gallon 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 1307.950619 / 1677.569982.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Megagrams per Cubic yard to Stones per Gallon
Megagram per Cubic yard and Stone per Gallon 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 gallon = megagrams per cubic yard × 0.779669780103
This factor comes from each unit's defined relationship to the category's base unit: 1 megagram per cubic yard equals 1307.95061931 base units, and 1 stone per gallon equals 1677.56998244 base units, so dividing one by the other gives the direct megagram per cubic yard-to-stone per gallon factor of 0.779669780103.
Simple example
1 Mg/yd3 × 0.7796697801 = 0.7796697801 st/gal
1 megagram per cubic yard = 0.7796697801 stones per gallon.
Real-world example
1,000 Mg/yd3 × 0.7796697801 = 779.6697801 st/gal
1,000 megagrams per cubic yard = 779.6697801 stones per gallon.
Conversion table
| Megagram per Cubic yard (Mg/yd3) | Stone per Gallon (st/gal) |
|---|---|
| 0.1 Mg/yd3 | 0.077966978 st/gal |
| 1 Mg/yd3 | 0.7796697801 st/gal |
| 10 Mg/yd3 | 7.796697801 st/gal |
| 100 Mg/yd3 | 77.96697801 st/gal |
| 1,000 Mg/yd3 | 779.6697801 st/gal |
| 10,000 Mg/yd3 | 7,796.697801 st/gal |
Reverse conversion: Stone per Gallon to Megagram per Cubic yard
0.7796697801 st/gal × 1.28259428 = 1 Mg/yd3
0.7796697801 stones per gallon = 1 megagrams per cubic yard.
megagrams per cubic yard = stones per gallon × 1.28259427968
For a page dedicated to this direction, see Stone per Gallon to Megagram per Cubic yard.
Understanding the Megagram per Cubic yard (Mg/yd3)
Mass per volume density.
Understanding the Stone per Gallon (st/gal)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many stones per gallon are in 1 megagram per cubic yard?
1 megagram per cubic yard equals 0.7796697801 stones per gallon, using the exact defined conversion factor rather than an estimate.
How do I convert megagram per cubic yard to stone per gallon?
Multiply the megagram per cubic yard value by 0.7796697801. The converter above does this instantly to whatever precision you set.
How do I convert stone per gallon back to megagram per cubic yard?
Use the reverse factor: 1 stone per gallon equals 1.28259428 megagrams per cubic yard. You can also use the swap control in the converter above to flip the direction instantly.
What is a megagram per cubic yard?
Megagram per Cubic yard (Mg/yd3) is a unit of density.
What is a stone per gallon?
Stone per Gallon (st/gal) is a unit of density.
Is the megagram per cubic yard to stone per gallon conversion exact?
Yes. Both megagram per cubic yard and stone per gallon are defined by fixed standards rather than physical artifacts, so the factor of 0.7796697801 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.