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 Stone per Cubic Centimeter
Convert carat per cubic millimeter (ct/mm3) to stone per cubic centimeter (st/cm3) instantly with formula, conversion table, and FAQ.
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Convert carat per cubic millimeter (ct/mm3) to stone per cubic centimeter (st/cm3) instantly with formula, conversion table, and FAQ.
Context values
Some unit families need one extra value for a physically accurate result.
Stone per Cubic Centimeter (st/cm3) expresses mass in stone per unit volume in cubic centimeter, found by dividing a mass value by a volume value.
st/cm3 = ct/mm3 × 0.031495
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Formula
st/cm3 = ct/mm3 × 0.031495
ct/mm3 = st/cm3 × 31.751466
Conversion table
| 1 ct/mm3 | 0.031495 st/cm3 |
| 5 ct/mm3 | 0.157473 st/cm3 |
| 10 ct/mm3 | 0.314946 st/cm3 |
| 20 ct/mm3 | 0.629892 st/cm3 |
| 50 ct/mm3 | 1.57473 st/cm3 |
| 100 ct/mm3 | 3.149461 st/cm3 |
| 500 ct/mm3 | 15.747304 st/cm3 |
| 1000 ct/mm3 | 31.494609 st/cm3 |
Related conversions
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How the formula works
Both carat per cubic millimeter and stone per cubic centimeter 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 0.031495 to get stone per cubic centimeter. To reverse the conversion, multiply a stone per cubic centimeter value by 31.751466 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 Stone per Cubic Centimeter (st/cm3)?
Stone per Cubic Centimeter (st/cm3) expresses mass in stone per unit volume in cubic centimeter, found by dividing a mass value by a volume value.
How do I convert carat per cubic millimeter to stone per cubic centimeter?
Multiply the carat per cubic millimeter value by 0.031495 to get the equivalent in stone per cubic centimeter. For example, 5 ct/mm3 × 0.031495 = 0.157473 st/cm3.
Is this conversion exact?
Yes. Both units are defined using fixed metric and imperial conversion constants, so the factor 0.031495 is an exact, non-rounded value.
Can I convert stone per cubic centimeter back to carat per cubic millimeter?
Yes. Divide the stone per cubic centimeter value by 0.031495, or multiply it by 31.751466, to get carat per cubic millimeter.
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About converting carat per cubic millimeter to stone per cubic centimeter
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. Stone per Cubic Centimeter (st/cm3) expresses mass in stone per unit volume in cubic centimeter, found by dividing a mass value by a volume value.
Use this calculator to move between carat per cubic millimeter and stone per cubic centimeter accurately for science, engineering, manufacturing, or everyday density calculations. The Universal Converter uses exact unit factors, so results stay consistent across the site.