Mass per volume density.
Stones per Cubic yard to Milligrams per Gallon Converter — st/yd3 to mg/gal
Convert Stone per Cubic yard (st/yd3) to Milligram per Gallon (mg/gal) using the exact conversion factor (1 stone per cubic yard = 31,441.13779 milligram per gallon). See the formula, worked examples, and conversion table.
Stones per Cubic yard to Milligrams 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 8.305869898 / 0.0002641720524.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Stones per Cubic yard to Milligrams per Gallon
Stone per Cubic yard and Milligram 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
milligrams per gallon = stones per cubic yard × 31441.1377868
This factor comes from each unit's defined relationship to the category's base unit: 1 stone per cubic yard equals 8.30586989761 base units, and 1 milligram per gallon equals 0.000264172052358 base units, so dividing one by the other gives the direct stone per cubic yard-to-milligram per gallon factor of 31441.1377868.
Simple example
1 st/yd3 × 31441.13779 = 31,441.13779 mg/gal
1 stone per cubic yard = 31,441.13779 milligrams per gallon.
Real-world example
1,000 st/yd3 × 31441.13779 = 31,441,137.79 mg/gal
1,000 stones per cubic yard = 31,441,137.79 milligrams per gallon.
Conversion table
| Stone per Cubic yard (st/yd3) | Milligram per Gallon (mg/gal) |
|---|---|
| 0.1 st/yd3 | 3,144.113779 mg/gal |
| 1 st/yd3 | 31,441.13779 mg/gal |
| 10 st/yd3 | 314,411.3779 mg/gal |
| 100 st/yd3 | 3,144,113.779 mg/gal |
| 1,000 st/yd3 | 31,441,137.79 mg/gal |
| 10,000 st/yd3 | 314,411,377.9 mg/gal |
Reverse conversion: Milligram per Gallon to Stone per Cubic yard
1 mg/gal × 0.00003180546476 = 0.0000318055 st/yd3
1 milligram per gallon = 0.0000318055 stones per cubic yard.
stones per cubic yard = milligrams per gallon × 0.0000318054647634
For a page dedicated to this direction, see Milligram per Gallon to Stone per Cubic yard.
Understanding the Stone per Cubic yard (st/yd3)
Mass per volume density.
Understanding the Milligram per Gallon (mg/gal)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many milligrams per gallon are in 1 stone per cubic yard?
1 stone per cubic yard equals 31,441.13779 milligrams per gallon, using the exact defined conversion factor rather than an estimate.
How do I convert stone per cubic yard to milligram per gallon?
Multiply the stone per cubic yard value by 31441.13779. The converter above does this instantly to whatever precision you set.
How do I convert milligram per gallon back to stone per cubic yard?
Use the reverse factor: 1 milligram per gallon equals 0.0000318055 stones per cubic yard. You can also use the swap control in the converter above to flip the direction instantly.
What is a stone per cubic yard?
Stone per Cubic yard (st/yd3) is a unit of density.
What is a milligram per gallon?
Milligram per Gallon (mg/gal) is a unit of density.
Is the stone per cubic yard to milligram per gallon conversion exact?
Yes. Both stone per cubic yard and milligram per gallon are defined by fixed standards rather than physical artifacts, so the factor of 31441.13779 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.