Mass per volume density.
Stones per Gallon to Megagrams per Quart Converter — st/gal to Mg/qt
Convert Stone per Gallon (st/gal) to Megagram per Quart (Mg/qt) using the exact conversion factor (1 stone per gallon = 0.0015875733 megagram per quart). See the formula, worked examples, and conversion table.
Stones per Gallon to Megagrams per Quart 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 1677.569982 / 1.05668821e+6.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Stones per Gallon to Megagrams per Quart
Stone per Gallon and Megagram per Quart 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 quart = stones per gallon × 0.001587573295
This factor comes from each unit's defined relationship to the category's base unit: 1 stone per gallon equals 1677.56998244 base units, and 1 megagram per quart equals 1056688.20943 base units, so dividing one by the other gives the direct stone per gallon-to-megagram per quart factor of 0.001587573295.
Simple example
1 st/gal × 0.001587573295 = 0.0015875733 Mg/qt
1 stone per gallon = 0.0015875733 megagrams per quart.
Real-world example
1,000 st/gal × 0.001587573295 = 1.587573295 Mg/qt
1,000 stones per gallon = 1.587573295 megagrams per quart.
Conversion table
| Stone per Gallon (st/gal) | Megagram per Quart (Mg/qt) |
|---|---|
| 0.1 st/gal | 0.0001587573 Mg/qt |
| 1 st/gal | 0.0015875733 Mg/qt |
| 10 st/gal | 0.015875733 Mg/qt |
| 100 st/gal | 0.1587573295 Mg/qt |
| 1,000 st/gal | 1.587573295 Mg/qt |
| 10,000 st/gal | 15.87573295 Mg/qt |
Reverse conversion: Megagram per Quart to Stone per Gallon
0.0015875733 Mg/qt × 629.8921777 = 1.000000003 st/gal
0.0015875733 megagrams per quart = 1.000000003 stones per gallon.
stones per gallon = megagrams per quart × 629.892177671
For a page dedicated to this direction, see Megagram per Quart to Stone per Gallon.
Understanding the Stone per Gallon (st/gal)
Mass per volume density.
Understanding the Megagram per Quart (Mg/qt)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many megagrams per quart are in 1 stone per gallon?
1 stone per gallon equals 0.0015875733 megagrams per quart, using the exact defined conversion factor rather than an estimate.
How do I convert stone per gallon to megagram per quart?
Multiply the stone per gallon value by 0.001587573295. The converter above does this instantly to whatever precision you set.
How do I convert megagram per quart back to stone per gallon?
Use the reverse factor: 1 megagram per quart equals 629.8921777 stones per gallon. You can also use the swap control in the converter above to flip the direction instantly.
What is a stone per gallon?
Stone per Gallon (st/gal) is a unit of density.
What is a megagram per quart?
Megagram per Quart (Mg/qt) is a unit of density.
Is the stone per gallon to megagram per quart conversion exact?
Yes. Both stone per gallon and megagram per quart are defined by fixed standards rather than physical artifacts, so the factor of 0.001587573295 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.