Mass per volume density.
Stones per Cup to Pounds per Imperial gallon Converter — st/cup to lb/imp gal
Convert Stone per Cup (st/cup) to Pound per Imperial gallon (lb/imp gal) using the exact conversion factor (1 stone per cup = 269.0127833 pound per imperial gallon). See the formula, worked examples, and conversion table.
Stones per Cup 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 26841.11972 / 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 Cup to Pounds per Imperial gallon
Stone per Cup 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 cup × 269.012783313
This factor comes from each unit's defined relationship to the category's base unit: 1 stone per cup equals 26841.119719 base units, and 1 pound per imperial gallon equals 99.7763726631 base units, so dividing one by the other gives the direct stone per cup-to-pound per imperial gallon factor of 269.012783313.
Simple example
1 st/cup × 269.0127833 = 269.0127833 lb/imp gal
1 stone per cup = 269.0127833 pounds per imperial gallon.
Real-world example
1,000 st/cup × 269.0127833 = 269,012.7833 lb/imp gal
1,000 stones per cup = 269,012.7833 pounds per imperial gallon.
Conversion table
| Stone per Cup (st/cup) | Pound per Imperial gallon (lb/imp gal) |
|---|---|
| 0.1 st/cup | 26.90127833 lb/imp gal |
| 1 st/cup | 269.0127833 lb/imp gal |
| 10 st/cup | 2,690.127833 lb/imp gal |
| 100 st/cup | 26,901.27833 lb/imp gal |
| 1,000 st/cup | 269,012.7833 lb/imp gal |
| 10,000 st/cup | 2,690,127.833 lb/imp gal |
Reverse conversion: Pound per Imperial gallon to Stone per Cup
269.0127833 lb/imp gal × 0.003717295467 = 1 st/cup
269.0127833 pounds per imperial gallon = 1 stones per cup.
stones per cup = pounds per imperial gallon × 0.00371729546709
For a page dedicated to this direction, see Pound per Imperial gallon to Stone per Cup.
Understanding the Stone per Cup (st/cup)
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 cup?
1 stone per cup equals 269.0127833 pounds per imperial gallon, using the exact defined conversion factor rather than an estimate.
How do I convert stone per cup to pound per imperial gallon?
Multiply the stone per cup value by 269.0127833. The converter above does this instantly to whatever precision you set.
How do I convert pound per imperial gallon back to stone per cup?
Use the reverse factor: 1 pound per imperial gallon equals 0.0037172955 stones per cup. You can also use the swap control in the converter above to flip the direction instantly.
What is a stone per cup?
Stone per Cup (st/cup) 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 cup to pound per imperial gallon conversion exact?
Yes. Both stone per cup and pound per imperial gallon are defined by fixed standards rather than physical artifacts, so the factor of 269.0127833 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.