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 Ounce per Cubic inch
Convert grain per cup (gr/cup) to ounce per cubic inch (oz/in3) instantly with formula, conversion table, and FAQ.
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Convert grain per cup (gr/cup) to ounce per cubic inch (oz/in3) instantly with formula, conversion table, and FAQ.
Context values
Some unit families need one extra value for a physically accurate result.
Ounce per Cubic inch (oz/in3) expresses mass in ounce per unit volume in cubic inch, found by dividing a mass value by a volume value.
oz/in3 = gr/cup × 0.000158
Results update instantly for Grain per Cup to Ounce per Cubic inch conversions.
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Formula
oz/in3 = gr/cup × 0.000158
gr/cup = oz/in3 × 6316.40625
Conversion table
| 1 gr/cup | 0.000158 oz/in3 |
| 5 gr/cup | 0.000792 oz/in3 |
| 10 gr/cup | 0.001583 oz/in3 |
| 20 gr/cup | 0.003166 oz/in3 |
| 50 gr/cup | 0.007916 oz/in3 |
| 100 gr/cup | 0.015832 oz/in3 |
| 500 gr/cup | 0.079159 oz/in3 |
| 1000 gr/cup | 0.158318 oz/in3 |
Related conversions
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How the formula works
Both grain per cup and ounce per cubic inch 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 0.000158 to get ounce per cubic inch. To reverse the conversion, multiply a ounce per cubic inch value by 6316.40625 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 Ounce per Cubic inch (oz/in3)?
Ounce per Cubic inch (oz/in3) expresses mass in ounce per unit volume in cubic inch, found by dividing a mass value by a volume value.
How do I convert grain per cup to ounce per cubic inch?
Multiply the grain per cup value by 0.000158 to get the equivalent in ounce per cubic inch. For example, 5 gr/cup × 0.000158 = 0.000792 oz/in3.
Is this conversion exact?
Yes. Both units are defined using fixed metric and imperial conversion constants, so the factor 0.000158 is an exact, non-rounded value.
Can I convert ounce per cubic inch back to grain per cup?
Yes. Divide the ounce per cubic inch value by 0.000158, or multiply it by 6316.40625, to get grain per cup.
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About converting grain per cup to ounce per cubic inch
Grain per Cup (gr/cup) expresses mass in grain per unit volume in cup, found by dividing a mass value by a volume value. Ounce per Cubic inch (oz/in3) expresses mass in ounce per unit volume in cubic inch, found by dividing a mass value by a volume value.
Use this calculator to move between grain per cup and ounce per cubic inch accurately for science, engineering, manufacturing, or everyday density calculations. The Universal Converter uses exact unit factors, so results stay consistent across the site.