Mass per volume density.
Grains per Quart to Long tons per Pint Converter — gr/qt to long ton/pt
Convert Grain per Quart (gr/qt) to Long ton per Pint (long ton/pt) using the exact conversion factor (1 grain per quart = 3.188776e-8 long ton per pint). See the formula, worked examples, and conversion table.
Grains per Quart to Long tons per Pint 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 0.06847224418 / 2.14728958e+6.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Grains per Quart to Long tons per Pint
Grain per Quart and Long ton per Pint 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
long tons per pint = grains per quart × 3.188776e-8
This factor comes from each unit's defined relationship to the category's base unit: 1 grain per quart equals 0.0684722441811 base units, and 1 long ton per pint equals 2147289.57752 base units, so dividing one by the other gives the direct grain per quart-to-long ton per pint factor of 3.188776e-8.
Simple example
1 gr/qt × 3.188776e-8 = 3.188776e-8 long ton/pt
1 grain per quart = 3.188776e-8 long tons per pint.
Real-world example
1,000 gr/qt × 3.188776e-8 = 0.0000318878 long ton/pt
1,000 grains per quart = 0.0000318878 long tons per pint.
Conversion table
| Grain per Quart (gr/qt) | Long ton per Pint (long ton/pt) |
|---|---|
| 0.1 gr/qt | 3.188776e-9 long ton/pt |
| 1 gr/qt | 3.188776e-8 long ton/pt |
| 10 gr/qt | 3.188776e-7 long ton/pt |
| 100 gr/qt | 0.0000031888 long ton/pt |
| 1,000 gr/qt | 0.0000318878 long ton/pt |
| 10,000 gr/qt | 0.0003188776 long ton/pt |
Reverse conversion: Long ton per Pint to Grain per Quart
3.188776e-8 long ton/pt × 31360000 = 1.000000154 gr/qt
3.188776e-8 long tons per pint = 1.000000154 grains per quart.
grains per quart = long tons per pint × 31360000
For a page dedicated to this direction, see Long ton per Pint to Grain per Quart.
Understanding the Grain per Quart (gr/qt)
Mass per volume density.
Understanding the Long ton per Pint (long ton/pt)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many long tons per pint are in 1 grain per quart?
1 grain per quart equals 3.188776e-8 long tons per pint, using the exact defined conversion factor rather than an estimate.
How do I convert grain per quart to long ton per pint?
Multiply the grain per quart value by 3.188776e-8. The converter above does this instantly to whatever precision you set.
How do I convert long ton per pint back to grain per quart?
Use the reverse factor: 1 long ton per pint equals 31,360,000 grains per quart. You can also use the swap control in the converter above to flip the direction instantly.
What is a grain per quart?
Grain per Quart (gr/qt) is a unit of density.
What is a long ton per pint?
Long ton per Pint (long ton/pt) is a unit of density.
Is the grain per quart to long ton per pint conversion exact?
Yes. Both grain per quart and long ton per pint are defined by fixed standards rather than physical artifacts, so the factor of 3.188776e-8 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.