Mass per volume density.
Stones per Pint to Pounds per Imperial gallon Converter — st/pt to lb/imp gal
Convert Stone per Pint (st/pt) to Pound per Imperial gallon (lb/imp gal) using the exact conversion factor (1 stone per pint = 134.5063917 pound per imperial gallon). See the formula, worked examples, and conversion table.
Stones per Pint to Pounds 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 13420.55986 / 99.77637266.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Stones per Pint to Pounds per Imperial gallon
Stone per Pint and Pound 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
pounds per imperial gallon = stones per pint × 134.506391657
This factor comes from each unit's defined relationship to the category's base unit: 1 stone per pint equals 13420.5598595 base units, and 1 pound per imperial gallon equals 99.7763726631 base units, so dividing one by the other gives the direct stone per pint-to-pound per imperial gallon factor of 134.506391657.
Simple example
1 st/pt × 134.5063917 = 134.5063917 lb/imp gal
1 stone per pint = 134.5063917 pounds per imperial gallon.
Real-world example
1,000 st/pt × 134.5063917 = 134,506.3917 lb/imp gal
1,000 stones per pint = 134,506.3917 pounds per imperial gallon.
Conversion table
| Stone per Pint (st/pt) | Pound per Imperial gallon (lb/imp gal) |
|---|---|
| 0.1 st/pt | 13.45063917 lb/imp gal |
| 1 st/pt | 134.5063917 lb/imp gal |
| 10 st/pt | 1,345.063917 lb/imp gal |
| 100 st/pt | 13,450.63917 lb/imp gal |
| 1,000 st/pt | 134,506.3917 lb/imp gal |
| 10,000 st/pt | 1,345,063.917 lb/imp gal |
Reverse conversion: Pound per Imperial gallon to Stone per Pint
134.5063917 lb/imp gal × 0.007434590934 = 1 st/pt
134.5063917 pounds per imperial gallon = 1 stones per pint.
stones per pint = pounds per imperial gallon × 0.00743459093419
For a page dedicated to this direction, see Pound per Imperial gallon to Stone per Pint.
Understanding the Stone per Pint (st/pt)
Mass per volume density.
Understanding the Pound per Imperial gallon (lb/imp gal)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many pounds per imperial gallon are in 1 stone per pint?
1 stone per pint equals 134.5063917 pounds per imperial gallon, using the exact defined conversion factor rather than an estimate.
How do I convert stone per pint to pound per imperial gallon?
Multiply the stone per pint value by 134.5063917. The converter above does this instantly to whatever precision you set.
How do I convert pound per imperial gallon back to stone per pint?
Use the reverse factor: 1 pound per imperial gallon equals 0.0074345909 stones per pint. You can also use the swap control in the converter above to flip the direction instantly.
What is a stone per pint?
Stone per Pint (st/pt) is a unit of density.
What is a pound per imperial gallon?
Pound per Imperial gallon (lb/imp gal) is a unit of density.
Is the stone per pint to pound per imperial gallon conversion exact?
Yes. Both stone per pint and pound per imperial gallon are defined by fixed standards rather than physical artifacts, so the factor of 134.5063917 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.