Mass per volume density.
Grains per Fluid ounce to Stones per Quart Converter — gr/fl oz to st/qt
Convert Grain per Fluid ounce (gr/fl oz) to Stone per Quart (st/qt) using the exact conversion factor (1 grain per fluid ounce = 0.0003265306 stone per quart). See the formula, worked examples, and conversion table.
Grains per Fluid ounce 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 2.191111814 / 6710.27993.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Grains per Fluid ounce to Stones per Quart
Grain per Fluid ounce 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 = grains per fluid ounce × 0.000326530612245
This factor comes from each unit's defined relationship to the category's base unit: 1 grain per fluid ounce equals 2.19111181379 base units, and 1 stone per quart equals 6710.27992975 base units, so dividing one by the other gives the direct grain per fluid ounce-to-stone per quart factor of 0.000326530612245.
Simple example
1 gr/fl oz × 0.0003265306122 = 0.0003265306 st/qt
1 grain per fluid ounce = 0.0003265306 stones per quart.
Real-world example
1,000 gr/fl oz × 0.0003265306122 = 0.3265306122 st/qt
1,000 grains per fluid ounce = 0.3265306122 stones per quart.
Conversion table
| Grain per Fluid ounce (gr/fl oz) | Stone per Quart (st/qt) |
|---|---|
| 0.1 gr/fl oz | 0.0000326531 st/qt |
| 1 gr/fl oz | 0.0003265306 st/qt |
| 10 gr/fl oz | 0.0032653061 st/qt |
| 100 gr/fl oz | 0.0326530612 st/qt |
| 1,000 gr/fl oz | 0.3265306122 st/qt |
| 10,000 gr/fl oz | 3.265306122 st/qt |
Reverse conversion: Stone per Quart to Grain per Fluid ounce
0.0003265306 st/qt × 3062.5 = 0.9999999625 gr/fl oz
0.0003265306 stones per quart = 0.9999999625 grains per fluid ounce.
grains per fluid ounce = stones per quart × 3062.5
For a page dedicated to this direction, see Stone per Quart to Grain per Fluid ounce.
Understanding the Grain per Fluid ounce (gr/fl oz)
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 grain per fluid ounce?
1 grain per fluid ounce equals 0.0003265306 stones per quart, using the exact defined conversion factor rather than an estimate.
How do I convert grain per fluid ounce to stone per quart?
Multiply the grain per fluid ounce value by 0.0003265306122. The converter above does this instantly to whatever precision you set.
How do I convert stone per quart back to grain per fluid ounce?
Use the reverse factor: 1 stone per quart equals 3,062.5 grains per fluid ounce. You can also use the swap control in the converter above to flip the direction instantly.
What is a grain per fluid ounce?
Grain per Fluid ounce (gr/fl oz) is a unit of density.
What is a stone per quart?
Stone per Quart (st/qt) is a unit of density.
Is the grain per fluid ounce to stone per quart conversion exact?
Yes. Both grain per fluid ounce and stone per quart are defined by fixed standards rather than physical artifacts, so the factor of 0.0003265306122 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.