Mass per volume density.
Stones per Gallon to Megagrams per Gallon Converter — st/gal to Mg/gal
Convert Stone per Gallon (st/gal) to Megagram per Gallon (Mg/gal) using the exact conversion factor (1 stone per gallon = 0.0063502932 megagram per gallon). See the formula, worked examples, and conversion table.
Stones per Gallon to Megagrams 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 1677.569982 / 264172.0524.
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 Gallon
Stone per Gallon and Megagram 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
megagrams per gallon = stones per gallon × 0.00635029318
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 gallon equals 264172.052358 base units, so dividing one by the other gives the direct stone per gallon-to-megagram per gallon factor of 0.00635029318.
Simple example
1 st/gal × 0.00635029318 = 0.0063502932 Mg/gal
1 stone per gallon = 0.0063502932 megagrams per gallon.
Real-world example
1,000 st/gal × 0.00635029318 = 6.35029318 Mg/gal
1,000 stones per gallon = 6.35029318 megagrams per gallon.
Conversion table
| Stone per Gallon (st/gal) | Megagram per Gallon (Mg/gal) |
|---|---|
| 0.1 st/gal | 0.0006350293 Mg/gal |
| 1 st/gal | 0.0063502932 Mg/gal |
| 10 st/gal | 0.0635029318 Mg/gal |
| 100 st/gal | 0.635029318 Mg/gal |
| 1,000 st/gal | 6.35029318 Mg/gal |
| 10,000 st/gal | 63.5029318 Mg/gal |
Reverse conversion: Megagram per Gallon to Stone per Gallon
0.0063502932 Mg/gal × 157.4730444 = 1.000000003 st/gal
0.0063502932 megagrams per gallon = 1.000000003 stones per gallon.
stones per gallon = megagrams per gallon × 157.473044418
For a page dedicated to this direction, see Megagram per Gallon to Stone per Gallon.
Understanding the Stone per Gallon (st/gal)
Mass per volume density.
Understanding the Megagram 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 megagrams per gallon are in 1 stone per gallon?
1 stone per gallon equals 0.0063502932 megagrams per gallon, using the exact defined conversion factor rather than an estimate.
How do I convert stone per gallon to megagram per gallon?
Multiply the stone per gallon value by 0.00635029318. The converter above does this instantly to whatever precision you set.
How do I convert megagram per gallon back to stone per gallon?
Use the reverse factor: 1 megagram per gallon equals 157.4730444 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 gallon?
Megagram per Gallon (Mg/gal) is a unit of density.
Is the stone per gallon to megagram per gallon conversion exact?
Yes. Both stone per gallon and megagram per gallon are defined by fixed standards rather than physical artifacts, so the factor of 0.00635029318 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.