Carat per Cubic Millimeter (ct/mm3) expresses mass in carat per unit volume in cubic millimeter, found by dividing a mass value by a volume value.
Carat per Cubic Millimeter to Gram per Cubic inch
Convert carat per cubic millimeter (ct/mm3) to gram per cubic inch (g/in3) instantly with formula, conversion table, and FAQ.
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Convert carat per cubic millimeter (ct/mm3) to gram per cubic inch (g/in3) instantly with formula, conversion table, and FAQ.
Context values
Some unit families need one extra value for a physically accurate result.
Gram per Cubic inch (g/in3) expresses mass in gram per unit volume in cubic inch, found by dividing a mass value by a volume value.
g/in3 = ct/mm3 × 3277.4128
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Formula
g/in3 = ct/mm3 × 3277.4128
ct/mm3 = g/in3 × 0.000305
Conversion table
| 1 ct/mm3 | 3277.4128 g/in3 |
| 5 ct/mm3 | 16387.064 g/in3 |
| 10 ct/mm3 | 32774.128 g/in3 |
| 20 ct/mm3 | 65548.256 g/in3 |
| 50 ct/mm3 | 163870.64 g/in3 |
| 100 ct/mm3 | 327741.28 g/in3 |
| 500 ct/mm3 | 1.638706e6 g/in3 |
| 1000 ct/mm3 | 3.277413e6 g/in3 |
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How the formula works
Both carat per cubic millimeter and gram per cubic inch measure the same physical quantity (mass per unit volume), so converting between them is a single multiplication. Multiply a value in carat per cubic millimeter by 3277.4128 to get gram per cubic inch. To reverse the conversion, multiply a gram per cubic inch value by 0.000305 to get back to carat per cubic millimeter.
Frequently asked questions
What is Carat per Cubic Millimeter (ct/mm3)?
Carat per Cubic Millimeter (ct/mm3) expresses mass in carat per unit volume in cubic millimeter, found by dividing a mass value by a volume value.
What is Gram per Cubic inch (g/in3)?
Gram per Cubic inch (g/in3) expresses mass in gram per unit volume in cubic inch, found by dividing a mass value by a volume value.
How do I convert carat per cubic millimeter to gram per cubic inch?
Multiply the carat per cubic millimeter value by 3277.4128 to get the equivalent in gram per cubic inch. For example, 5 ct/mm3 × 3277.4128 = 16387.064 g/in3.
Is this conversion exact?
Yes. Both units are defined using fixed metric and imperial conversion constants, so the factor 3277.4128 is an exact, non-rounded value.
Can I convert gram per cubic inch back to carat per cubic millimeter?
Yes. Divide the gram per cubic inch value by 3277.4128, or multiply it by 0.000305, to get carat per cubic millimeter.
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About converting carat per cubic millimeter to gram per cubic inch
Carat per Cubic Millimeter (ct/mm3) expresses mass in carat per unit volume in cubic millimeter, found by dividing a mass value by a volume value. Gram per Cubic inch (g/in3) expresses mass in gram per unit volume in cubic inch, found by dividing a mass value by a volume value.
Use this calculator to move between carat per cubic millimeter and gram per cubic inch accurately for science, engineering, manufacturing, or everyday density calculations. The Universal Converter uses exact unit factors, so results stay consistent across the site.