Mass per volume density.
Long tons per Gallon to Stones per Quart Converter — long ton/gal to st/qt
Convert Long ton per Gallon (long ton/gal) to Stone per Quart (st/qt) using the exact conversion factor (1 long ton per gallon = 40 stone per quart). See the formula, worked examples, and conversion table.
Long tons per Gallon to Stones 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 268411.1972 / 6710.27993.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Long tons per Gallon to Stones per Quart
Long ton per Gallon and Stone 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
stones per quart = long tons per gallon × 40
This factor comes from each unit's defined relationship to the category's base unit: 1 long ton per gallon equals 268411.19719 base units, and 1 stone per quart equals 6710.27992975 base units, so dividing one by the other gives the direct long ton per gallon-to-stone per quart factor of 40.
Simple example
1 long ton/gal × 40 = 40 st/qt
1 long ton per gallon = 40 stones per quart.
Real-world example
1,000 long ton/gal × 40 = 40,000 st/qt
1,000 long tons per gallon = 40,000 stones per quart.
Conversion table
| Long ton per Gallon (long ton/gal) | Stone per Quart (st/qt) |
|---|---|
| 0.1 long ton/gal | 4 st/qt |
| 1 long ton/gal | 40 st/qt |
| 10 long ton/gal | 400 st/qt |
| 100 long ton/gal | 4,000 st/qt |
| 1,000 long ton/gal | 40,000 st/qt |
| 10,000 long ton/gal | 400,000 st/qt |
Reverse conversion: Stone per Quart to Long ton per Gallon
40 st/qt × 0.025 = 1 long ton/gal
40 stones per quart = 1 long tons per gallon.
long tons per gallon = stones per quart × 0.025
For a page dedicated to this direction, see Stone per Quart to Long ton per Gallon.
Understanding the Long ton per Gallon (long ton/gal)
Mass per volume density.
Understanding the Stone per Quart (st/qt)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many stones per quart are in 1 long ton per gallon?
1 long ton per gallon equals 40 stones per quart, using the exact defined conversion factor rather than an estimate.
How do I convert long ton per gallon to stone per quart?
Multiply the long ton per gallon value by 40. The converter above does this instantly to whatever precision you set.
How do I convert stone per quart back to long ton per gallon?
Use the reverse factor: 1 stone per quart equals 0.025 long tons per gallon. You can also use the swap control in the converter above to flip the direction instantly.
What is a long ton per gallon?
Long ton per Gallon (long ton/gal) is a unit of density.
What is a stone per quart?
Stone per Quart (st/qt) is a unit of density.
Is the long ton per gallon to stone per quart conversion exact?
Yes. Both long ton per gallon and stone per quart are defined by fixed standards rather than physical artifacts, so the factor of 40 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.