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 Grain per Cup
Convert carat per cubic foot (ct/ft3) to grain per cup (gr/cup) instantly with formula, conversion table, and FAQ.
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Convert carat per cubic foot (ct/ft3) to grain per cup (gr/cup) instantly with formula, conversion table, and FAQ.
Context values
Some unit families need one extra value for a physically accurate result.
Grain per Cup (gr/cup) expresses mass in grain per unit volume in cup, found by dividing a mass value by a volume value.
gr/cup = ct/ft3 × 0.025788
Results update instantly for Carat per Cubic foot to Grain per Cup conversions.
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Formula
gr/cup = ct/ft3 × 0.025788
ct/ft3 = gr/cup × 38.778361
Conversion table
| 1 ct/ft3 | 0.025788 gr/cup |
| 5 ct/ft3 | 0.128938 gr/cup |
| 10 ct/ft3 | 0.257876 gr/cup |
| 20 ct/ft3 | 0.515752 gr/cup |
| 50 ct/ft3 | 1.289379 gr/cup |
| 100 ct/ft3 | 2.578758 gr/cup |
| 500 ct/ft3 | 12.893789 gr/cup |
| 1000 ct/ft3 | 25.787578 gr/cup |
Related conversions
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How the formula works
Both carat per cubic foot and grain 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 0.025788 to get grain per cup. To reverse the conversion, multiply a grain per cup value by 38.778361 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 Grain per Cup (gr/cup)?
Grain per Cup (gr/cup) expresses mass in grain per unit volume in cup, found by dividing a mass value by a volume value.
How do I convert carat per cubic foot to grain per cup?
Multiply the carat per cubic foot value by 0.025788 to get the equivalent in grain per cup. For example, 5 ct/ft3 × 0.025788 = 0.128938 gr/cup.
Is this conversion exact?
Yes. Both units are defined using fixed metric and imperial conversion constants, so the factor 0.025788 is an exact, non-rounded value.
Can I convert grain per cup back to carat per cubic foot?
Yes. Divide the grain per cup value by 0.025788, or multiply it by 38.778361, to get carat per cubic foot.
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About converting carat per cubic foot to grain 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. Grain per Cup (gr/cup) expresses mass in grain 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 grain 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.