Mass per volume density.
Milligrams per Gallon to Stones per Cubic yard Converter — mg/gal to st/yd3
Convert Milligram per Gallon (mg/gal) to Stone per Cubic yard (st/yd3) using the exact conversion factor (1 milligram per gallon = 0.0000318055 stone per cubic yard). See the formula, worked examples, and conversion table.
Milligrams 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 0.0002641720524 / 8.305869898.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Milligrams per Gallon to Stones per Cubic yard
Milligram 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 = milligrams per gallon × 0.0000318054647634
This factor comes from each unit's defined relationship to the category's base unit: 1 milligram per gallon equals 0.000264172052358 base units, and 1 stone per cubic yard equals 8.30586989761 base units, so dividing one by the other gives the direct milligram per gallon-to-stone per cubic yard factor of 0.0000318054647634.
Simple example
1 mg/gal × 0.00003180546476 = 0.0000318055 st/yd3
1 milligram per gallon = 0.0000318055 stones per cubic yard.
Real-world example
1,000 mg/gal × 0.00003180546476 = 0.0318054648 st/yd3
1,000 milligrams per gallon = 0.0318054648 stones per cubic yard.
Conversion table
| Milligram per Gallon (mg/gal) | Stone per Cubic yard (st/yd3) |
|---|---|
| 0.1 mg/gal | 0.0000031805 st/yd3 |
| 1 mg/gal | 0.0000318055 st/yd3 |
| 10 mg/gal | 0.0003180546 st/yd3 |
| 100 mg/gal | 0.0031805465 st/yd3 |
| 1,000 mg/gal | 0.0318054648 st/yd3 |
| 10,000 mg/gal | 0.3180546476 st/yd3 |
Reverse conversion: Stone per Cubic yard to Milligram per Gallon
0.0000318055 st/yd3 × 31441.13779 = 1.000001108 mg/gal
0.0000318055 stones per cubic yard = 1.000001108 milligrams per gallon.
milligrams per gallon = stones per cubic yard × 31441.1377868
For a page dedicated to this direction, see Stone per Cubic yard to Milligram per Gallon.
Understanding the Milligram 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 milligram per gallon?
1 milligram per gallon equals 0.0000318055 stones per cubic yard, using the exact defined conversion factor rather than an estimate.
How do I convert milligram per gallon to stone per cubic yard?
Multiply the milligram per gallon value by 0.00003180546476. The converter above does this instantly to whatever precision you set.
How do I convert stone per cubic yard back to milligram per gallon?
Use the reverse factor: 1 stone per cubic yard equals 31,441.13779 milligrams per gallon. You can also use the swap control in the converter above to flip the direction instantly.
What is a milligram per gallon?
Milligram 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 milligram per gallon to stone per cubic yard conversion exact?
Yes. Both milligram per gallon and stone per cubic yard are defined by fixed standards rather than physical artifacts, so the factor of 0.00003180546476 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.