Carat per Cubic foot (ct/ft3) expresses mass in carat per unit volume in cubic foot, found by dividing a mass value by a volume value.
Carat per Cubic foot to Stone per Cup
Convert carat per cubic foot (ct/ft3) to stone per cup (st/cup) instantly with formula, conversion table, and FAQ.
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Convert carat per cubic foot (ct/ft3) 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/ft3 × 2.631386e-7
Results update instantly for Carat per Cubic foot to Stone per Cup conversions.
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Formula
st/cup = ct/ft3 × 2.631386e-7
ct/ft3 = st/cup × 3.800279e6
Conversion table
| 1 ct/ft3 | 2.631386e-7 st/cup |
| 5 ct/ft3 | 1.315693e-6 st/cup |
| 10 ct/ft3 | 2.631386e-6 st/cup |
| 20 ct/ft3 | 5.262771e-6 st/cup |
| 50 ct/ft3 | 1.315693e-5 st/cup |
| 100 ct/ft3 | 2.631386e-5 st/cup |
| 500 ct/ft3 | 0.000132 st/cup |
| 1000 ct/ft3 | 0.000263 st/cup |
Related conversions
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How the formula works
Both carat per cubic foot 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 foot by 2.631386e-7 to get stone per cup. To reverse the conversion, multiply a stone per cup value by 3.800279e6 to get back to carat per cubic foot.
Frequently asked questions
What is Carat per Cubic foot (ct/ft3)?
Carat per Cubic foot (ct/ft3) expresses mass in carat per unit volume in cubic foot, 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 foot to stone per cup?
Multiply the carat per cubic foot value by 2.631386e-7 to get the equivalent in stone per cup. For example, 5 ct/ft3 × 2.631386e-7 = 1.315693e-6 st/cup.
Is this conversion exact?
Yes. Both units are defined using fixed metric and imperial conversion constants, so the factor 2.631386e-7 is an exact, non-rounded value.
Can I convert stone per cup back to carat per cubic foot?
Yes. Divide the stone per cup value by 2.631386e-7, or multiply it by 3.800279e6, to get carat per cubic foot.
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About converting carat per cubic foot to stone per cup
Carat per Cubic foot (ct/ft3) expresses mass in carat per unit volume in cubic foot, 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 foot 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.