Mass per volume density.
Pounds per Imperial gallon to Grains per Liter Converter — lb/imp gal to gr/L
Convert Pound per Imperial gallon (lb/imp gal) to Grain per Liter (gr/L) using the exact conversion factor (1 pound per imperial gallon = 1,539.784738 grain per liter). See the formula, worked examples, and conversion table.
Pounds per Imperial gallon to Grains per Liter 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 99.77637266 / 0.06479891.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Pounds per Imperial gallon to Grains per Liter
Pound per Imperial gallon and Grain per Liter 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 liter = pounds per imperial gallon × 1539.78473809
This factor comes from each unit's defined relationship to the category's base unit: 1 pound per imperial gallon equals 99.7763726631 base units, and 1 grain per liter equals 0.06479891 base units, so dividing one by the other gives the direct pound per imperial gallon-to-grain per liter factor of 1539.78473809.
Simple example
1 lb/imp gal × 1539.784738 = 1,539.784738 gr/L
1 pound per imperial gallon = 1,539.784738 grains per liter.
Real-world example
1,000 lb/imp gal × 1539.784738 = 1,539,784.738 gr/L
1,000 pounds per imperial gallon = 1,539,784.738 grains per liter.
Conversion table
| Pound per Imperial gallon (lb/imp gal) | Grain per Liter (gr/L) |
|---|---|
| 0.1 lb/imp gal | 153.9784738 gr/L |
| 1 lb/imp gal | 1,539.784738 gr/L |
| 10 lb/imp gal | 15,397.84738 gr/L |
| 100 lb/imp gal | 153,978.4738 gr/L |
| 1,000 lb/imp gal | 1,539,784.738 gr/L |
| 10,000 lb/imp gal | 15,397,847.38 gr/L |
Reverse conversion: Grain per Liter to Pound per Imperial gallon
1 gr/L × 0.0006494414286 = 0.0006494414 lb/imp gal
1 grain per liter = 0.0006494414 pounds per imperial gallon.
pounds per imperial gallon = grains per liter × 0.000649441428571
For a page dedicated to this direction, see Grain per Liter to Pound per Imperial gallon.
Understanding the Pound per Imperial gallon (lb/imp gal)
Mass per volume density.
Understanding the Grain per Liter (gr/L)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many grains per liter are in 1 pound per imperial gallon?
1 pound per imperial gallon equals 1,539.784738 grains per liter, using the exact defined conversion factor rather than an estimate.
How do I convert pound per imperial gallon to grain per liter?
Multiply the pound per imperial gallon value by 1539.784738. The converter above does this instantly to whatever precision you set.
How do I convert grain per liter back to pound per imperial gallon?
Use the reverse factor: 1 grain per liter equals 0.0006494414 pounds per imperial gallon. You can also use the swap control in the converter above to flip the direction instantly.
What is a pound per imperial gallon?
Pound per Imperial gallon (lb/imp gal) is a unit of density.
What is a grain per liter?
Grain per Liter (gr/L) is a unit of density.
Is the pound per imperial gallon to grain per liter conversion exact?
Yes. Both pound per imperial gallon and grain per liter are defined by fixed standards rather than physical artifacts, so the factor of 1539.784738 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.