Mass per volume density.
Grams per Cup to Carats per Cubic Millimeter Converter — g/cup to ct/mm3
Convert Gram per Cup (g/cup) to Carat per Cubic Millimeter (ct/mm3) using the exact conversion factor (1 gram per cup = 0.0000211338 carat per cubic millimeter). See the formula, worked examples, and conversion table.
Grams per Cup to Carats 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 4.226752838 / 200000.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Grams per Cup to Carats per Cubic Millimeter
Gram per Cup and Carat 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
carats per cubic millimeter = grams per cup × 0.0000211337641887
This factor comes from each unit's defined relationship to the category's base unit: 1 gram per cup equals 4.22675283773 base units, and 1 carat per cubic millimeter equals 200000 base units, so dividing one by the other gives the direct gram per cup-to-carat per cubic millimeter factor of 0.0000211337641887.
Simple example
1 g/cup × 0.00002113376419 = 0.0000211338 ct/mm3
1 gram per cup = 0.0000211338 carats per cubic millimeter.
Real-world example
1,000 g/cup × 0.00002113376419 = 0.0211337642 ct/mm3
1,000 grams per cup = 0.0211337642 carats per cubic millimeter.
Conversion table
| Gram per Cup (g/cup) | Carat per Cubic Millimeter (ct/mm3) |
|---|---|
| 0.1 g/cup | 0.0000021134 ct/mm3 |
| 1 g/cup | 0.0000211338 ct/mm3 |
| 10 g/cup | 0.0002113376 ct/mm3 |
| 100 g/cup | 0.0021133764 ct/mm3 |
| 1,000 g/cup | 0.0211337642 ct/mm3 |
| 10,000 g/cup | 0.2113376419 ct/mm3 |
Reverse conversion: Carat per Cubic Millimeter to Gram per Cup
0.0000211338 ct/mm3 × 47317.6473 = 1.000001695 g/cup
0.0000211338 carats per cubic millimeter = 1.000001695 grams per cup.
grams per cup = carats per cubic millimeter × 47317.6473
For a page dedicated to this direction, see Carat per Cubic Millimeter to Gram per Cup.
Understanding the Gram per Cup (g/cup)
Mass per volume density.
Understanding the Carat per Cubic Millimeter (ct/mm3)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many carats per cubic millimeter are in 1 gram per cup?
1 gram per cup equals 0.0000211338 carats per cubic millimeter, using the exact defined conversion factor rather than an estimate.
How do I convert gram per cup to carat per cubic millimeter?
Multiply the gram per cup value by 0.00002113376419. The converter above does this instantly to whatever precision you set.
How do I convert carat per cubic millimeter back to gram per cup?
Use the reverse factor: 1 carat per cubic millimeter equals 47,317.6473 grams per cup. You can also use the swap control in the converter above to flip the direction instantly.
What is a gram per cup?
Gram per Cup (g/cup) is a unit of density.
What is a carat per cubic millimeter?
Carat per Cubic Millimeter (ct/mm3) is a unit of density.
Is the gram per cup to carat per cubic millimeter conversion exact?
Yes. Both gram per cup and carat per cubic millimeter are defined by fixed standards rather than physical artifacts, so the factor of 0.00002113376419 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.