Mass per volume density.
Carats per Milliliter to Milligrams per Cubic Millimeter Converter — ct/mL to mg/mm3
Convert Carat per Milliliter (ct/mL) to Milligram per Cubic Millimeter (mg/mm3) using the exact conversion factor (1 carat per milliliter = 0.2 milligram per cubic millimeter). See the formula, worked examples, and conversion table.
Carats per Milliliter to Milligrams per Cubic Millimeter 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 / 1000.
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 Milligrams per Cubic Millimeter
Carat per Milliliter and Milligram per Cubic Millimeter 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
milligrams per cubic millimeter = carats per milliliter × 0.2
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 milligram per cubic millimeter equals 1000 base units, so dividing one by the other gives the direct carat per milliliter-to-milligram per cubic millimeter factor of 0.2.
Simple example
1 ct/mL × 0.2 = 0.2 mg/mm3
1 carat per milliliter = 0.2 milligrams per cubic millimeter.
Real-world example
1,000 ct/mL × 0.2 = 200 mg/mm3
1,000 carats per milliliter = 200 milligrams per cubic millimeter.
Conversion table
| Carat per Milliliter (ct/mL) | Milligram per Cubic Millimeter (mg/mm3) |
|---|---|
| 0.1 ct/mL | 0.02 mg/mm3 |
| 1 ct/mL | 0.2 mg/mm3 |
| 10 ct/mL | 2 mg/mm3 |
| 100 ct/mL | 20 mg/mm3 |
| 1,000 ct/mL | 200 mg/mm3 |
| 10,000 ct/mL | 2,000 mg/mm3 |
Reverse conversion: Milligram per Cubic Millimeter to Carat per Milliliter
0.2 mg/mm3 × 5 = 1 ct/mL
0.2 milligrams per cubic millimeter = 1 carats per milliliter.
carats per milliliter = milligrams per cubic millimeter × 5
For a page dedicated to this direction, see Milligram per Cubic Millimeter to Carat per Milliliter.
Understanding the Carat per Milliliter (ct/mL)
Mass per volume density.
Understanding the Milligram per Cubic Millimeter (mg/mm3)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many milligrams per cubic millimeter are in 1 carat per milliliter?
1 carat per milliliter equals 0.2 milligrams per cubic millimeter, using the exact defined conversion factor rather than an estimate.
How do I convert carat per milliliter to milligram per cubic millimeter?
Multiply the carat per milliliter value by 0.2. The converter above does this instantly to whatever precision you set.
How do I convert milligram per cubic millimeter back to carat per milliliter?
Use the reverse factor: 1 milligram per cubic millimeter equals 5 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 milligram per cubic millimeter?
Milligram per Cubic Millimeter (mg/mm3) is a unit of density.
Is the carat per milliliter to milligram per cubic millimeter conversion exact?
Yes. Both carat per milliliter and milligram per cubic millimeter are defined by fixed standards rather than physical artifacts, so the factor of 0.2 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.