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 Cup
Convert carat per cubic millimeter (ct/mm3) to stone per cup (st/cup) instantly with formula, conversion table, and FAQ.
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Convert carat per cubic millimeter (ct/mm3) to stone per cup (st/cup) instantly with formula, conversion table, and FAQ.
Context values
Some unit families need one extra value for a physically accurate result.
Stone per Cup (st/cup) expresses mass in stone per unit volume in cup, found by dividing a mass value by a volume value.
st/cup = ct/mm3 × 7.451254
Results update instantly for Carat per Cubic Millimeter to Stone per Cup conversions.
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Formula
st/cup = ct/mm3 × 7.451254
ct/mm3 = st/cup × 0.134206
Conversion table
| 1 ct/mm3 | 7.451254 st/cup |
| 5 ct/mm3 | 37.25627 st/cup |
| 10 ct/mm3 | 74.51254 st/cup |
| 20 ct/mm3 | 149.02508 st/cup |
| 50 ct/mm3 | 372.562699 st/cup |
| 100 ct/mm3 | 745.125398 st/cup |
| 500 ct/mm3 | 3725.626988 st/cup |
| 1000 ct/mm3 | 7451.253975 st/cup |
Related conversions
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How the formula works
Both carat per cubic millimeter and stone per cup 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 7.451254 to get stone per cup. To reverse the conversion, multiply a stone per cup value by 0.134206 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 Cup (st/cup)?
Stone per Cup (st/cup) expresses mass in stone per unit volume in cup, found by dividing a mass value by a volume value.
How do I convert carat per cubic millimeter to stone per cup?
Multiply the carat per cubic millimeter value by 7.451254 to get the equivalent in stone per cup. For example, 5 ct/mm3 × 7.451254 = 37.25627 st/cup.
Is this conversion exact?
Yes. Both units are defined using fixed metric and imperial conversion constants, so the factor 7.451254 is an exact, non-rounded value.
Can I convert stone per cup back to carat per cubic millimeter?
Yes. Divide the stone per cup value by 7.451254, or multiply it by 0.134206, to get carat per cubic millimeter.
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About converting carat per cubic millimeter to stone per cup
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 Cup (st/cup) expresses mass in stone per unit volume in cup, found by dividing a mass value by a volume value.
Use this calculator to move between carat per cubic millimeter and stone per cup accurately for science, engineering, manufacturing, or everyday density calculations. The Universal Converter uses exact unit factors, so results stay consistent across the site.