Mass per volume density.
Pounds per Imperial gallon to Grains per Pint Converter — lb/imp gal to gr/pt
Convert Pound per Imperial gallon (lb/imp gal) to Grain per Pint (gr/pt) using the exact conversion factor (1 pound per imperial gallon = 728.5899116 grain per pint). See the formula, worked examples, and conversion table.
Pounds per Imperial gallon to Grains 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 99.77637266 / 0.1369444884.
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 Pint
Pound per Imperial gallon and Grain 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
grains per pint = pounds per imperial gallon × 728.58991155
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 pint equals 0.136944488362 base units, so dividing one by the other gives the direct pound per imperial gallon-to-grain per pint factor of 728.58991155.
Simple example
1 lb/imp gal × 728.5899116 = 728.5899116 gr/pt
1 pound per imperial gallon = 728.5899116 grains per pint.
Real-world example
1,000 lb/imp gal × 728.5899116 = 728,589.9116 gr/pt
1,000 pounds per imperial gallon = 728,589.9116 grains per pint.
Conversion table
| Pound per Imperial gallon (lb/imp gal) | Grain per Pint (gr/pt) |
|---|---|
| 0.1 lb/imp gal | 72.85899116 gr/pt |
| 1 lb/imp gal | 728.5899116 gr/pt |
| 10 lb/imp gal | 7,285.899116 gr/pt |
| 100 lb/imp gal | 72,858.99116 gr/pt |
| 1,000 lb/imp gal | 728,589.9116 gr/pt |
| 10,000 lb/imp gal | 7,285,899.116 gr/pt |
Reverse conversion: Grain per Pint to Pound per Imperial gallon
728.5899116 gr/pt × 0.001372514201 = 1 lb/imp gal
728.5899116 grains per pint = 1 pounds per imperial gallon.
pounds per imperial gallon = grains per pint × 0.00137251420058
For a page dedicated to this direction, see Grain per Pint to Pound per Imperial gallon.
Understanding the Pound per Imperial gallon (lb/imp gal)
Mass per volume density.
Understanding the Grain per Pint (gr/pt)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many grains per pint are in 1 pound per imperial gallon?
1 pound per imperial gallon equals 728.5899116 grains per pint, using the exact defined conversion factor rather than an estimate.
How do I convert pound per imperial gallon to grain per pint?
Multiply the pound per imperial gallon value by 728.5899116. The converter above does this instantly to whatever precision you set.
How do I convert grain per pint back to pound per imperial gallon?
Use the reverse factor: 1 grain per pint equals 0.0013725142 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 pint?
Grain per Pint (gr/pt) is a unit of density.
Is the pound per imperial gallon to grain per pint conversion exact?
Yes. Both pound per imperial gallon and grain per pint are defined by fixed standards rather than physical artifacts, so the factor of 728.5899116 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.