Mass per volume density.
Grains per Fluid ounce to Pounds per Quart Converter — gr/fl oz to lb/qt
Convert Grain per Fluid ounce (gr/fl oz) to Pound per Quart (lb/qt) using the exact conversion factor (1 grain per fluid ounce = 0.0045714286 pound per quart). See the formula, worked examples, and conversion table.
Grains per Fluid ounce 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 2.191111814 / 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 Fluid ounce to Pounds per Quart
Grain per Fluid ounce 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 fluid ounce × 0.00457142857143
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 pound per quart equals 479.305709268 base units, so dividing one by the other gives the direct grain per fluid ounce-to-pound per quart factor of 0.00457142857143.
Simple example
1 gr/fl oz × 0.004571428571 = 0.0045714286 lb/qt
1 grain per fluid ounce = 0.0045714286 pounds per quart.
Real-world example
1,000 gr/fl oz × 0.004571428571 = 4.571428571 lb/qt
1,000 grains per fluid ounce = 4.571428571 pounds per quart.
Conversion table
| Grain per Fluid ounce (gr/fl oz) | Pound per Quart (lb/qt) |
|---|---|
| 0.1 gr/fl oz | 0.0004571429 lb/qt |
| 1 gr/fl oz | 0.0045714286 lb/qt |
| 10 gr/fl oz | 0.0457142857 lb/qt |
| 100 gr/fl oz | 0.4571428571 lb/qt |
| 1,000 gr/fl oz | 4.571428571 lb/qt |
| 10,000 gr/fl oz | 45.71428571 lb/qt |
Reverse conversion: Pound per Quart to Grain per Fluid ounce
0.0045714286 lb/qt × 218.75 = 1.000000006 gr/fl oz
0.0045714286 pounds per quart = 1.000000006 grains per fluid ounce.
grains per fluid ounce = pounds per quart × 218.75
For a page dedicated to this direction, see Pound per Quart to Grain per Fluid ounce.
Understanding the Grain per Fluid ounce (gr/fl oz)
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 fluid ounce?
1 grain per fluid ounce equals 0.0045714286 pounds per quart, using the exact defined conversion factor rather than an estimate.
How do I convert grain per fluid ounce to pound per quart?
Multiply the grain per fluid ounce value by 0.004571428571. The converter above does this instantly to whatever precision you set.
How do I convert pound per quart back to grain per fluid ounce?
Use the reverse factor: 1 pound per quart equals 218.75 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 pound per quart?
Pound per Quart (lb/qt) is a unit of density.
Is the grain per fluid ounce to pound per quart conversion exact?
Yes. Both grain per fluid ounce and pound per quart are defined by fixed standards rather than physical artifacts, so the factor of 0.004571428571 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.