Carat per Cup (ct/cup) expresses mass in carat per unit volume in cup, found by dividing a mass value by a volume value.
Carat per Cup to Stone per Cup
Convert carat per cup (ct/cup) to stone per cup (st/cup) instantly with formula, conversion table, and FAQ.
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Convert carat per cup (ct/cup) 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/cup × 3.149461e-5
Results update instantly for Carat per Cup to Stone per Cup conversions.
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Formula
st/cup = ct/cup × 3.149461e-5
ct/cup = st/cup × 31751.4659
Conversion table
| 1 ct/cup | 3.149461e-5 st/cup |
| 5 ct/cup | 0.000157 st/cup |
| 10 ct/cup | 0.000315 st/cup |
| 20 ct/cup | 0.00063 st/cup |
| 50 ct/cup | 0.001575 st/cup |
| 100 ct/cup | 0.003149 st/cup |
| 500 ct/cup | 0.015747 st/cup |
| 1000 ct/cup | 0.031495 st/cup |
Related conversions
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How the formula works
Both carat per cup 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 cup by 3.149461e-5 to get stone per cup. To reverse the conversion, multiply a stone per cup value by 31751.4659 to get back to carat per cup.
Frequently asked questions
What is Carat per Cup (ct/cup)?
Carat per Cup (ct/cup) expresses mass in carat per unit volume in cup, 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 cup to stone per cup?
Multiply the carat per cup value by 3.149461e-5 to get the equivalent in stone per cup. For example, 5 ct/cup × 3.149461e-5 = 0.000157 st/cup.
Is this conversion exact?
Yes. Both units are defined using fixed metric and imperial conversion constants, so the factor 3.149461e-5 is an exact, non-rounded value.
Can I convert stone per cup back to carat per cup?
Yes. Divide the stone per cup value by 3.149461e-5, or multiply it by 31751.4659, to get carat per cup.
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About converting carat per cup to stone per cup
Carat per Cup (ct/cup) expresses mass in carat per unit volume in cup, 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 cup 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.