Mass per volume density.
Carats per Milliliter to Stones per Cubic Meter Converter — ct/mL to st/m3
Convert Carat per Milliliter (ct/mL) to Stone per Cubic Meter (st/m3) using the exact conversion factor (1 carat per milliliter = 31.49460888 stone per cubic meter). See the formula, worked examples, and conversion table.
Carats per Milliliter to Stones per Cubic Meter 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 200 / 6.35029318.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Carats per Milliliter to Stones per Cubic Meter
Carat per Milliliter and Stone per Cubic Meter 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 cubic meter = carats per milliliter × 31.4946088836
This factor comes from each unit's defined relationship to the category's base unit: 1 carat per milliliter equals 200 base units, and 1 stone per cubic meter equals 6.35029318 base units, so dividing one by the other gives the direct carat per milliliter-to-stone per cubic meter factor of 31.4946088836.
Simple example
1 ct/mL × 31.49460888 = 31.49460888 st/m3
1 carat per milliliter = 31.49460888 stones per cubic meter.
Real-world example
1,000 ct/mL × 31.49460888 = 31,494.60888 st/m3
1,000 carats per milliliter = 31,494.60888 stones per cubic meter.
Conversion table
| Carat per Milliliter (ct/mL) | Stone per Cubic Meter (st/m3) |
|---|---|
| 0.1 ct/mL | 3.149460888 st/m3 |
| 1 ct/mL | 31.49460888 st/m3 |
| 10 ct/mL | 314.9460888 st/m3 |
| 100 ct/mL | 3,149.460888 st/m3 |
| 1,000 ct/mL | 31,494.60888 st/m3 |
| 10,000 ct/mL | 314,946.0888 st/m3 |
Reverse conversion: Stone per Cubic Meter to Carat per Milliliter
31.49460888 st/m3 × 0.0317514659 = 0.9999999999 ct/mL
31.49460888 stones per cubic meter = 0.9999999999 carats per milliliter.
carats per milliliter = stones per cubic meter × 0.0317514659
For a page dedicated to this direction, see Stone per Cubic Meter to Carat per Milliliter.
Understanding the Carat per Milliliter (ct/mL)
Mass per volume density.
Understanding the Stone per Cubic Meter (st/m3)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many stones per cubic meter are in 1 carat per milliliter?
1 carat per milliliter equals 31.49460888 stones per cubic meter, using the exact defined conversion factor rather than an estimate.
How do I convert carat per milliliter to stone per cubic meter?
Multiply the carat per milliliter value by 31.49460888. The converter above does this instantly to whatever precision you set.
How do I convert stone per cubic meter back to carat per milliliter?
Use the reverse factor: 1 stone per cubic meter equals 0.0317514659 carats per milliliter. You can also use the swap control in the converter above to flip the direction instantly.
What is a carat per milliliter?
Carat per Milliliter (ct/mL) is a unit of density.
What is a stone per cubic meter?
Stone per Cubic Meter (st/m3) is a unit of density.
Is the carat per milliliter to stone per cubic meter conversion exact?
Yes. Both carat per milliliter and stone per cubic meter are defined by fixed standards rather than physical artifacts, so the factor of 31.49460888 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.