Mass per volume density.
Stones per Imperial gallon to Carats per Cup Converter — st/imp gal to ct/cup
Convert Stone per Imperial gallon (st/imp gal) to Carat per Cup (ct/cup) using the exact conversion factor (1 stone per imperial gallon = 1,652.414124 carat per cup). See the formula, worked examples, and conversion table.
Stones per Imperial gallon to Carats per Cup 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 1396.869217 / 0.8453505675.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Stones per Imperial gallon to Carats per Cup
Stone per Imperial gallon and Carat per Cup 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
carats per cup = stones per imperial gallon × 1652.41412369
This factor comes from each unit's defined relationship to the category's base unit: 1 stone per imperial gallon equals 1396.86921728 base units, and 1 carat per cup equals 0.845350567546 base units, so dividing one by the other gives the direct stone per imperial gallon-to-carat per cup factor of 1652.41412369.
Simple example
1 st/imp gal × 1652.414124 = 1,652.414124 ct/cup
1 stone per imperial gallon = 1,652.414124 carats per cup.
Real-world example
1,000 st/imp gal × 1652.414124 = 1,652,414.124 ct/cup
1,000 stones per imperial gallon = 1,652,414.124 carats per cup.
Conversion table
| Stone per Imperial gallon (st/imp gal) | Carat per Cup (ct/cup) |
|---|---|
| 0.1 st/imp gal | 165.2414124 ct/cup |
| 1 st/imp gal | 1,652.414124 ct/cup |
| 10 st/imp gal | 16,524.14124 ct/cup |
| 100 st/imp gal | 165,241.4124 ct/cup |
| 1,000 st/imp gal | 1,652,414.124 ct/cup |
| 10,000 st/imp gal | 16,524,141.24 ct/cup |
Reverse conversion: Carat per Cup to Stone per Imperial gallon
1 ct/cup × 0.0006051751711 = 0.0006051752 st/imp gal
1 carat per cup = 0.0006051752 stones per imperial gallon.
stones per imperial gallon = carats per cup × 0.00060517517108
For a page dedicated to this direction, see Carat per Cup to Stone per Imperial gallon.
Understanding the Stone per Imperial gallon (st/imp gal)
Mass per volume density.
Understanding the Carat per Cup (ct/cup)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many carats per cup are in 1 stone per imperial gallon?
1 stone per imperial gallon equals 1,652.414124 carats per cup, using the exact defined conversion factor rather than an estimate.
How do I convert stone per imperial gallon to carat per cup?
Multiply the stone per imperial gallon value by 1652.414124. The converter above does this instantly to whatever precision you set.
How do I convert carat per cup back to stone per imperial gallon?
Use the reverse factor: 1 carat per cup equals 0.0006051752 stones per imperial gallon. You can also use the swap control in the converter above to flip the direction instantly.
What is a stone per imperial gallon?
Stone per Imperial gallon (st/imp gal) is a unit of density.
What is a carat per cup?
Carat per Cup (ct/cup) is a unit of density.
Is the stone per imperial gallon to carat per cup conversion exact?
Yes. Both stone per imperial gallon and carat per cup are defined by fixed standards rather than physical artifacts, so the factor of 1652.414124 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.