Mass per volume density.
Stones per Gallon to Stones per Imperial gallon Converter — st/gal to st/imp gal
Convert Stone per Gallon (st/gal) to Stone per Imperial gallon (st/imp gal) using the exact conversion factor (1 stone per gallon = 1.200949926 stone per imperial gallon). See the formula, worked examples, and conversion table.
Stones per Gallon to Stones per Imperial 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 / 1396.869217.
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 Stones per Imperial gallon
Stone per Gallon and Stone per Imperial 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 imperial gallon = stones per gallon × 1.2009499255
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 stone per imperial gallon equals 1396.86921728 base units, so dividing one by the other gives the direct stone per gallon-to-stone per imperial gallon factor of 1.2009499255.
Simple example
1 st/gal × 1.200949926 = 1.200949926 st/imp gal
1 stone per gallon = 1.200949926 stones per imperial gallon.
Real-world example
1,000 st/gal × 1.200949926 = 1,200.949926 st/imp gal
1,000 stones per gallon = 1,200.949926 stones per imperial gallon.
Conversion table
| Stone per Gallon (st/gal) | Stone per Imperial gallon (st/imp gal) |
|---|---|
| 0.1 st/gal | 0.1200949926 st/imp gal |
| 1 st/gal | 1.200949926 st/imp gal |
| 10 st/gal | 12.00949926 st/imp gal |
| 100 st/gal | 120.0949926 st/imp gal |
| 1,000 st/gal | 1,200.949926 st/imp gal |
| 10,000 st/gal | 12,009.49926 st/imp gal |
Reverse conversion: Stone per Imperial gallon to Stone per Gallon
1.200949926 st/imp gal × 0.8326741846 = 1 st/gal
1.200949926 stones per imperial gallon = 1 stones per gallon.
stones per gallon = stones per imperial gallon × 0.832674184629
For a page dedicated to this direction, see Stone per Imperial gallon to Stone per Gallon.
Understanding the Stone per Gallon (st/gal)
Mass per volume density.
Understanding the Stone per Imperial gallon (st/imp gal)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many stones per imperial gallon are in 1 stone per gallon?
1 stone per gallon equals 1.200949926 stones per imperial gallon, using the exact defined conversion factor rather than an estimate.
How do I convert stone per gallon to stone per imperial gallon?
Multiply the stone per gallon value by 1.200949926. The converter above does this instantly to whatever precision you set.
How do I convert stone per imperial gallon back to stone per gallon?
Use the reverse factor: 1 stone per imperial gallon equals 0.8326741846 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 stone per imperial gallon?
Stone per Imperial gallon (st/imp gal) is a unit of density.
Is the stone per gallon to stone per imperial gallon conversion exact?
Yes. Both stone per gallon and stone per imperial gallon are defined by fixed standards rather than physical artifacts, so the factor of 1.200949926 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.