Grain per Cup (gr/cup) expresses mass in grain per unit volume in cup, found by dividing a mass value by a volume value.
Grain per Cup to Gram per Cubic foot
Convert grain per cup (gr/cup) to gram per cubic foot (g/ft3) instantly with formula, conversion table, and FAQ.
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Convert grain per cup (gr/cup) to gram per cubic foot (g/ft3) instantly with formula, conversion table, and FAQ.
Context values
Some unit families need one extra value for a physically accurate result.
Gram per Cubic foot (g/ft3) expresses mass in gram per unit volume in cubic foot, found by dividing a mass value by a volume value.
g/ft3 = gr/cup × 7.755672
Results update instantly for Grain per Cup to Gram per Cubic foot conversions.
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Formula
g/ft3 = gr/cup × 7.755672
gr/cup = g/ft3 × 0.128938
Conversion table
| 1 gr/cup | 7.755672 g/ft3 |
| 5 gr/cup | 38.778361 g/ft3 |
| 10 gr/cup | 77.556721 g/ft3 |
| 20 gr/cup | 155.113443 g/ft3 |
| 50 gr/cup | 387.783607 g/ft3 |
| 100 gr/cup | 775.567214 g/ft3 |
| 500 gr/cup | 3877.836069 g/ft3 |
| 1000 gr/cup | 7755.672137 g/ft3 |
Related conversions
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How the formula works
Both grain per cup and gram per cubic foot measure the same physical quantity (mass per unit volume), so converting between them is a single multiplication. Multiply a value in grain per cup by 7.755672 to get gram per cubic foot. To reverse the conversion, multiply a gram per cubic foot value by 0.128938 to get back to grain per cup.
Frequently asked questions
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.
What is Gram per Cubic foot (g/ft3)?
Gram per Cubic foot (g/ft3) expresses mass in gram per unit volume in cubic foot, found by dividing a mass value by a volume value.
How do I convert grain per cup to gram per cubic foot?
Multiply the grain per cup value by 7.755672 to get the equivalent in gram per cubic foot. For example, 5 gr/cup × 7.755672 = 38.778361 g/ft3.
Is this conversion exact?
Yes. Both units are defined using fixed metric and imperial conversion constants, so the factor 7.755672 is an exact, non-rounded value.
Can I convert gram per cubic foot back to grain per cup?
Yes. Divide the gram per cubic foot value by 7.755672, or multiply it by 0.128938, to get grain per cup.
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About converting grain per cup to gram per cubic foot
Grain per Cup (gr/cup) expresses mass in grain per unit volume in cup, found by dividing a mass value by a volume value. Gram per Cubic foot (g/ft3) expresses mass in gram per unit volume in cubic foot, found by dividing a mass value by a volume value.
Use this calculator to move between grain per cup and gram per cubic foot accurately for science, engineering, manufacturing, or everyday density calculations. The Universal Converter uses exact unit factors, so results stay consistent across the site.