Mass per volume density.
Carats per Cup to Milligrams per Cubic Millimeter Converter — ct/cup to mg/mm3
Convert Carat per Cup (ct/cup) to Milligram per Cubic Millimeter (mg/mm3) using the exact conversion factor (1 carat per cup = 0.0008453506 milligram per cubic millimeter). See the formula, worked examples, and conversion table.
Carats per Cup 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 0.8453505675 / 1000.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Carats per Cup to Milligrams per Cubic Millimeter
Carat per Cup 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 cup × 0.000845350567546
This factor comes from each unit's defined relationship to the category's base unit: 1 carat per cup equals 0.845350567546 base units, and 1 milligram per cubic millimeter equals 1000 base units, so dividing one by the other gives the direct carat per cup-to-milligram per cubic millimeter factor of 0.000845350567546.
Simple example
1 ct/cup × 0.0008453505675 = 0.0008453506 mg/mm3
1 carat per cup = 0.0008453506 milligrams per cubic millimeter.
Real-world example
1,000 ct/cup × 0.0008453505675 = 0.8453505675 mg/mm3
1,000 carats per cup = 0.8453505675 milligrams per cubic millimeter.
Conversion table
| Carat per Cup (ct/cup) | Milligram per Cubic Millimeter (mg/mm3) |
|---|---|
| 0.1 ct/cup | 0.0000845351 mg/mm3 |
| 1 ct/cup | 0.0008453506 mg/mm3 |
| 10 ct/cup | 0.0084535057 mg/mm3 |
| 100 ct/cup | 0.0845350568 mg/mm3 |
| 1,000 ct/cup | 0.8453505675 mg/mm3 |
| 10,000 ct/cup | 8.453505675 mg/mm3 |
Reverse conversion: Milligram per Cubic Millimeter to Carat per Cup
0.0008453506 mg/mm3 × 1182.941182 = 1.000000038 ct/cup
0.0008453506 milligrams per cubic millimeter = 1.000000038 carats per cup.
carats per cup = milligrams per cubic millimeter × 1182.9411825
For a page dedicated to this direction, see Milligram per Cubic Millimeter to Carat per Cup.
Understanding the Carat per Cup (ct/cup)
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 cup?
1 carat per cup equals 0.0008453506 milligrams per cubic millimeter, using the exact defined conversion factor rather than an estimate.
How do I convert carat per cup to milligram per cubic millimeter?
Multiply the carat per cup value by 0.0008453505675. The converter above does this instantly to whatever precision you set.
How do I convert milligram per cubic millimeter back to carat per cup?
Use the reverse factor: 1 milligram per cubic millimeter equals 1,182.941182 carats per cup. You can also use the swap control in the converter above to flip the direction instantly.
What is a carat per cup?
Carat per Cup (ct/cup) 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 cup to milligram per cubic millimeter conversion exact?
Yes. Both carat per cup and milligram per cubic millimeter are defined by fixed standards rather than physical artifacts, so the factor of 0.0008453505675 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.