Mass per volume density.
Stones per Cubic foot to Grains per Quart Converter — st/ft3 to gr/qt
Convert Stone per Cubic foot (st/ft3) to Grain per Quart (gr/qt) using the exact conversion factor (1 stone per cubic foot = 3,275.173611 grain per quart). See the formula, worked examples, and conversion table.
Stones per Cubic foot to Grains 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 224.2584872 / 0.06847224418.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Stones per Cubic foot to Grains per Quart
Stone per Cubic foot and Grain 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
grains per quart = stones per cubic foot × 3275.17361111
This factor comes from each unit's defined relationship to the category's base unit: 1 stone per cubic foot equals 224.258487235 base units, and 1 grain per quart equals 0.0684722441811 base units, so dividing one by the other gives the direct stone per cubic foot-to-grain per quart factor of 3275.17361111.
Simple example
1 st/ft3 × 3275.173611 = 3,275.173611 gr/qt
1 stone per cubic foot = 3,275.173611 grains per quart.
Real-world example
1,000 st/ft3 × 3275.173611 = 3,275,173.611 gr/qt
1,000 stones per cubic foot = 3,275,173.611 grains per quart.
Conversion table
| Stone per Cubic foot (st/ft3) | Grain per Quart (gr/qt) |
|---|---|
| 0.1 st/ft3 | 327.5173611 gr/qt |
| 1 st/ft3 | 3,275.173611 gr/qt |
| 10 st/ft3 | 32,751.73611 gr/qt |
| 100 st/ft3 | 327,517.3611 gr/qt |
| 1,000 st/ft3 | 3,275,173.611 gr/qt |
| 10,000 st/ft3 | 32,751,736.11 gr/qt |
Reverse conversion: Grain per Quart to Stone per Cubic foot
1 gr/qt × 0.0003053273257 = 0.0003053273 st/ft3
1 grain per quart = 0.0003053273 stones per cubic foot.
stones per cubic foot = grains per quart × 0.000305327325735
For a page dedicated to this direction, see Grain per Quart to Stone per Cubic foot.
Understanding the Stone per Cubic foot (st/ft3)
Mass per volume density.
Understanding the Grain per Quart (gr/qt)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many grains per quart are in 1 stone per cubic foot?
1 stone per cubic foot equals 3,275.173611 grains per quart, using the exact defined conversion factor rather than an estimate.
How do I convert stone per cubic foot to grain per quart?
Multiply the stone per cubic foot value by 3275.173611. The converter above does this instantly to whatever precision you set.
How do I convert grain per quart back to stone per cubic foot?
Use the reverse factor: 1 grain per quart equals 0.0003053273 stones per cubic foot. You can also use the swap control in the converter above to flip the direction instantly.
What is a stone per cubic foot?
Stone per Cubic foot (st/ft3) is a unit of density.
What is a grain per quart?
Grain per Quart (gr/qt) is a unit of density.
Is the stone per cubic foot to grain per quart conversion exact?
Yes. Both stone per cubic foot and grain per quart are defined by fixed standards rather than physical artifacts, so the factor of 3275.173611 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.