Mass per volume density.
Pounds per Quart to Grains per Cubic Millimeter Converter — lb/qt to gr/mm3
Convert Pound per Quart (lb/qt) to Grain per Cubic Millimeter (gr/mm3) using the exact conversion factor (1 pound per quart = 0.0073968175 grain per cubic millimeter). See the formula, worked examples, and conversion table.
Pounds per Quart to Grains per Cubic Millimeter 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 479.3057093 / 64798.91.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Pounds per Quart to Grains per Cubic Millimeter
Pound per Quart and Grain per Cubic Millimeter 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 cubic millimeter = pounds per quart × 0.00739681746603
This factor comes from each unit's defined relationship to the category's base unit: 1 pound per quart equals 479.305709268 base units, and 1 grain per cubic millimeter equals 64798.91 base units, so dividing one by the other gives the direct pound per quart-to-grain per cubic millimeter factor of 0.00739681746603.
Simple example
1 lb/qt × 0.007396817466 = 0.0073968175 gr/mm3
1 pound per quart = 0.0073968175 grains per cubic millimeter.
Real-world example
1,000 lb/qt × 0.007396817466 = 7.396817466 gr/mm3
1,000 pounds per quart = 7.396817466 grains per cubic millimeter.
Conversion table
| Pound per Quart (lb/qt) | Grain per Cubic Millimeter (gr/mm3) |
|---|---|
| 0.1 lb/qt | 0.0007396817 gr/mm3 |
| 1 lb/qt | 0.0073968175 gr/mm3 |
| 10 lb/qt | 0.0739681747 gr/mm3 |
| 100 lb/qt | 0.7396817466 gr/mm3 |
| 1,000 lb/qt | 7.396817466 gr/mm3 |
| 10,000 lb/qt | 73.96817466 gr/mm3 |
Reverse conversion: Grain per Cubic Millimeter to Pound per Quart
0.0073968175 gr/mm3 × 135.193278 = 1.000000005 lb/qt
0.0073968175 grains per cubic millimeter = 1.000000005 pounds per quart.
pounds per quart = grains per cubic millimeter × 135.193278
For a page dedicated to this direction, see Grain per Cubic Millimeter to Pound per Quart.
Understanding the Pound per Quart (lb/qt)
Mass per volume density.
Understanding the Grain per Cubic Millimeter (gr/mm3)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many grains per cubic millimeter are in 1 pound per quart?
1 pound per quart equals 0.0073968175 grains per cubic millimeter, using the exact defined conversion factor rather than an estimate.
How do I convert pound per quart to grain per cubic millimeter?
Multiply the pound per quart value by 0.007396817466. The converter above does this instantly to whatever precision you set.
How do I convert grain per cubic millimeter back to pound per quart?
Use the reverse factor: 1 grain per cubic millimeter equals 135.193278 pounds per quart. You can also use the swap control in the converter above to flip the direction instantly.
What is a pound per quart?
Pound per Quart (lb/qt) is a unit of density.
What is a grain per cubic millimeter?
Grain per Cubic Millimeter (gr/mm3) is a unit of density.
Is the pound per quart to grain per cubic millimeter conversion exact?
Yes. Both pound per quart and grain per cubic millimeter are defined by fixed standards rather than physical artifacts, so the factor of 0.007396817466 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.