Mass per volume density.
Grains per Cup to Pounds per Quart Converter — gr/cup to lb/qt
Convert Grain per Cup (gr/cup) to Pound per Quart (lb/qt) using the exact conversion factor (1 grain per cup = 0.0005714286 pound per quart). See the formula, worked examples, and conversion table.
Grains per Cup to Pounds 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 0.2738889767 / 479.3057093.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Grains per Cup to Pounds per Quart
Grain per Cup and Pound 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
pounds per quart = grains per cup × 0.000571428571429
This factor comes from each unit's defined relationship to the category's base unit: 1 grain per cup equals 0.273888976724 base units, and 1 pound per quart equals 479.305709268 base units, so dividing one by the other gives the direct grain per cup-to-pound per quart factor of 0.000571428571429.
Simple example
1 gr/cup × 0.0005714285714 = 0.0005714286 lb/qt
1 grain per cup = 0.0005714286 pounds per quart.
Real-world example
1,000 gr/cup × 0.0005714285714 = 0.5714285714 lb/qt
1,000 grains per cup = 0.5714285714 pounds per quart.
Conversion table
| Grain per Cup (gr/cup) | Pound per Quart (lb/qt) |
|---|---|
| 0.1 gr/cup | 0.0000571429 lb/qt |
| 1 gr/cup | 0.0005714286 lb/qt |
| 10 gr/cup | 0.0057142857 lb/qt |
| 100 gr/cup | 0.0571428571 lb/qt |
| 1,000 gr/cup | 0.5714285714 lb/qt |
| 10,000 gr/cup | 5.714285714 lb/qt |
Reverse conversion: Pound per Quart to Grain per Cup
0.0005714286 lb/qt × 1750 = 1.00000005 gr/cup
0.0005714286 pounds per quart = 1.00000005 grains per cup.
grains per cup = pounds per quart × 1750
For a page dedicated to this direction, see Pound per Quart to Grain per Cup.
Understanding the Grain per Cup (gr/cup)
Mass per volume density.
Understanding the Pound per Quart (lb/qt)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many pounds per quart are in 1 grain per cup?
1 grain per cup equals 0.0005714286 pounds per quart, using the exact defined conversion factor rather than an estimate.
How do I convert grain per cup to pound per quart?
Multiply the grain per cup value by 0.0005714285714. The converter above does this instantly to whatever precision you set.
How do I convert pound per quart back to grain per cup?
Use the reverse factor: 1 pound per quart equals 1,750 grains per cup. You can also use the swap control in the converter above to flip the direction instantly.
What is a grain per cup?
Grain per Cup (gr/cup) is a unit of density.
What is a pound per quart?
Pound per Quart (lb/qt) is a unit of density.
Is the grain per cup to pound per quart conversion exact?
Yes. Both grain per cup and pound per quart are defined by fixed standards rather than physical artifacts, so the factor of 0.0005714285714 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.