Mass per volume density.
Carats per Cubic Millimeter to Stones per Gallon Converter — ct/mm3 to st/gal
Convert Carat per Cubic Millimeter (ct/mm3) to Stone per Gallon (st/gal) using the exact conversion factor (1 carat per cubic millimeter = 119.2200636 stone per gallon). See the formula, worked examples, and conversion table.
Carats per Cubic Millimeter to Stones per 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 200000 / 1677.569982.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Carats per Cubic Millimeter to Stones per Gallon
Carat per Cubic Millimeter and Stone per 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
stones per gallon = carats per cubic millimeter × 119.2200636
This factor comes from each unit's defined relationship to the category's base unit: 1 carat per cubic millimeter equals 200000 base units, and 1 stone per gallon equals 1677.56998244 base units, so dividing one by the other gives the direct carat per cubic millimeter-to-stone per gallon factor of 119.2200636.
Simple example
1 ct/mm3 × 119.2200636 = 119.2200636 st/gal
1 carat per cubic millimeter = 119.2200636 stones per gallon.
Real-world example
1,000 ct/mm3 × 119.2200636 = 119,220.0636 st/gal
1,000 carats per cubic millimeter = 119,220.0636 stones per gallon.
Conversion table
| Carat per Cubic Millimeter (ct/mm3) | Stone per Gallon (st/gal) |
|---|---|
| 0.1 ct/mm3 | 11.92200636 st/gal |
| 1 ct/mm3 | 119.2200636 st/gal |
| 10 ct/mm3 | 1,192.200636 st/gal |
| 100 ct/mm3 | 11,922.00636 st/gal |
| 1,000 ct/mm3 | 119,220.0636 st/gal |
| 10,000 ct/mm3 | 1,192,200.636 st/gal |
Reverse conversion: Stone per Gallon to Carat per Cubic Millimeter
119.2200636 st/gal × 0.008387849912 = 1 ct/mm3
119.2200636 stones per gallon = 1 carats per cubic millimeter.
carats per cubic millimeter = stones per gallon × 0.00838784991218
For a page dedicated to this direction, see Stone per Gallon to Carat per Cubic Millimeter.
Understanding the Carat per Cubic Millimeter (ct/mm3)
Mass per volume density.
Understanding the Stone per Gallon (st/gal)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many stones per gallon are in 1 carat per cubic millimeter?
1 carat per cubic millimeter equals 119.2200636 stones per gallon, using the exact defined conversion factor rather than an estimate.
How do I convert carat per cubic millimeter to stone per gallon?
Multiply the carat per cubic millimeter value by 119.2200636. The converter above does this instantly to whatever precision you set.
How do I convert stone per gallon back to carat per cubic millimeter?
Use the reverse factor: 1 stone per gallon equals 0.0083878499 carats per cubic millimeter. You can also use the swap control in the converter above to flip the direction instantly.
What is a carat per cubic millimeter?
Carat per Cubic Millimeter (ct/mm3) is a unit of density.
What is a stone per gallon?
Stone per Gallon (st/gal) is a unit of density.
Is the carat per cubic millimeter to stone per gallon conversion exact?
Yes. Both carat per cubic millimeter and stone per gallon are defined by fixed standards rather than physical artifacts, so the factor of 119.2200636 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.