Mass per volume density.
Grains per Gallon to Long tons per Gallon Converter — gr/gal to long ton/gal
Convert Grain per Gallon (gr/gal) to Long ton per Gallon (long ton/gal) using the exact conversion factor (1 grain per gallon = 6.377551e-8 long ton per gallon). See the formula, worked examples, and conversion table.
Grains per Gallon to Long tons per Gallon 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 0.01711806105 / 268411.1972.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Grains per Gallon to Long tons per Gallon
Grain per Gallon and Long ton per Gallon 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 gallon = grains per gallon × 6.377551e-8
This factor comes from each unit's defined relationship to the category's base unit: 1 grain per gallon equals 0.0171180610453 base units, and 1 long ton per gallon equals 268411.19719 base units, so dividing one by the other gives the direct grain per gallon-to-long ton per gallon factor of 6.377551e-8.
Simple example
1 gr/gal × 6.377551e-8 = 6.377551e-8 long ton/gal
1 grain per gallon = 6.377551e-8 long tons per gallon.
Real-world example
1,000 gr/gal × 6.377551e-8 = 0.0000637755 long ton/gal
1,000 grains per gallon = 0.0000637755 long tons per gallon.
Conversion table
| Grain per Gallon (gr/gal) | Long ton per Gallon (long ton/gal) |
|---|---|
| 0.1 gr/gal | 6.377551e-9 long ton/gal |
| 1 gr/gal | 6.377551e-8 long ton/gal |
| 10 gr/gal | 6.377551e-7 long ton/gal |
| 100 gr/gal | 0.0000063776 long ton/gal |
| 1,000 gr/gal | 0.0000637755 long ton/gal |
| 10,000 gr/gal | 0.0006377551 long ton/gal |
Reverse conversion: Long ton per Gallon to Grain per Gallon
6.377551e-8 long ton/gal × 15680000 = 0.9999999968 gr/gal
6.377551e-8 long tons per gallon = 0.9999999968 grains per gallon.
grains per gallon = long tons per gallon × 15680000
For a page dedicated to this direction, see Long ton per Gallon to Grain per Gallon.
Understanding the Grain per Gallon (gr/gal)
Mass per volume density.
Understanding the Long ton per Gallon (long ton/gal)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many long tons per gallon are in 1 grain per gallon?
1 grain per gallon equals 6.377551e-8 long tons per gallon, using the exact defined conversion factor rather than an estimate.
How do I convert grain per gallon to long ton per gallon?
Multiply the grain per gallon value by 6.377551e-8. The converter above does this instantly to whatever precision you set.
How do I convert long ton per gallon back to grain per gallon?
Use the reverse factor: 1 long ton per gallon equals 15,680,000 grains per gallon. You can also use the swap control in the converter above to flip the direction instantly.
What is a grain per gallon?
Grain per Gallon (gr/gal) is a unit of density.
What is a long ton per gallon?
Long ton per Gallon (long ton/gal) is a unit of density.
Is the grain per gallon to long ton per gallon conversion exact?
Yes. Both grain per gallon and long ton per gallon are defined by fixed standards rather than physical artifacts, so the factor of 6.377551e-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.