Mass per volume density.
Grains per Quart to Kilograms per Imperial gallon Converter — gr/qt to kg/imp gal
Convert Grain per Quart (gr/qt) to Kilogram per Imperial gallon (kg/imp gal) using the exact conversion factor (1 grain per quart = 0.000311281 kilogram per imperial gallon). See the formula, worked examples, conversion table, and common uses.
Grains per Quart to Kilograms per Imperial 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 0.06847224418 / 219.9692483.
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 Kilograms per Imperial gallon
Grain per Quart and Kilogram per Imperial 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
kilograms per imperial gallon = grains per quart × 0.000311280984549
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 kilogram per imperial gallon equals 219.969248299 base units, so dividing one by the other gives the direct grain per quart-to-kilogram per imperial gallon factor of 0.000311280984549.
Simple example
1 gr/qt × 0.0003112809845 = 0.000311281 kg/imp gal
1 grain per quart = 0.000311281 kilograms per imperial gallon.
Real-world example
1,000 gr/qt × 0.0003112809845 = 0.3112809845 kg/imp gal
1,000 grains per quart = 0.3112809845 kilograms per imperial gallon.
Conversion table
| Grain per Quart (gr/qt) | Kilogram per Imperial gallon (kg/imp gal) |
|---|---|
| 0.1 gr/qt | 0.0000311281 kg/imp gal |
| 1 gr/qt | 0.000311281 kg/imp gal |
| 10 gr/qt | 0.0031128098 kg/imp gal |
| 100 gr/qt | 0.0311280985 kg/imp gal |
| 1,000 gr/qt | 0.3112809845 kg/imp gal |
| 10,000 gr/qt | 3.112809845 kg/imp gal |
Reverse conversion: Kilogram per Imperial gallon to Grain per Quart
0.000311281 kg/imp gal × 3212.531602 = 1.00000005 gr/qt
0.000311281 kilograms per imperial gallon = 1.00000005 grains per quart.
grains per quart = kilograms per imperial gallon × 3212.53160211
For a page dedicated to this direction, see Kilogram per Imperial gallon to Grain per Quart.
Understanding the Grain per Quart (gr/qt)
Mass per volume density.
Understanding the Kilogram per Imperial gallon
Kilogram per Imperial gallon (kg/imp gal) measures density. A mathematically valid way to express liquid density in kilograms per imperial gallon. It is classified as a mixed metric/UK customary density unit.
Uses of the Kilogram per Imperial gallon today
- Can be used to express liquid density in UK/Commonwealth contexts that reference the imperial gallon — in practice, kilograms per liter is the more commonly seen metric density unit even in these regions
Kilogram per Imperial gallon — sources
- UK/Commonwealth liquid-measurement references — The imperial gallon remains in some UK/Commonwealth commercial use, but liquid density is more commonly quoted in kilograms per liter.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many kilograms per imperial gallon are in 1 grain per quart?
1 grain per quart equals 0.000311281 kilograms per imperial gallon, using the exact defined conversion factor rather than an estimate.
How do I convert grain per quart to kilogram per imperial gallon?
Multiply the grain per quart value by 0.0003112809845. The converter above does this instantly to whatever precision you set.
How do I convert kilogram per imperial gallon back to grain per quart?
Use the reverse factor: 1 kilogram per imperial gallon equals 3,212.531602 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 kilogram per imperial gallon?
Kilogram per Imperial gallon (kg/imp gal) measures density. A mathematically valid way to express liquid density in kilograms per imperial gallon. It is classified as a mixed metric/UK customary density unit.
Is the grain per quart to kilogram per imperial gallon conversion exact?
Yes. Both grain per quart and kilogram per imperial gallon are defined by fixed standards rather than physical artifacts, so the factor of 0.0003112809845 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.