Pound per Gallon (lb/gal) expresses mass in pound per unit volume in gallon, found by dividing a mass value by a volume value.
Pound per Gallon to Gram per Cubic inch
Convert pound per gallon (lb/gal) to gram per cubic inch (g/in3) instantly with formula, conversion table, and FAQ.
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Convert pound per gallon (lb/gal) to gram per cubic inch (g/in3) instantly with formula, conversion table, and FAQ.
Context values
Some unit families need one extra value for a physically accurate result.
Gram per Cubic inch (g/in3) expresses mass in gram per unit volume in cubic inch, found by dividing a mass value by a volume value.
g/in3 = lb/gal × 1.963603
Results update instantly for Pound per Gallon to Gram per Cubic inch conversions.
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Formula
g/in3 = lb/gal × 1.963603
lb/gal = g/in3 × 0.509268
Conversion table
| 1 lb/gal | 1.963603 g/in3 |
| 5 lb/gal | 9.818017 g/in3 |
| 10 lb/gal | 19.636033 g/in3 |
| 20 lb/gal | 39.272067 g/in3 |
| 50 lb/gal | 98.180167 g/in3 |
| 100 lb/gal | 196.360333 g/in3 |
| 500 lb/gal | 981.801667 g/in3 |
| 1000 lb/gal | 1963.603333 g/in3 |
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How the formula works
Both pound per gallon and gram per cubic inch measure the same physical quantity (mass per unit volume), so converting between them is a single multiplication. Multiply a value in pound per gallon by 1.963603 to get gram per cubic inch. To reverse the conversion, multiply a gram per cubic inch value by 0.509268 to get back to pound per gallon.
Frequently asked questions
What is Pound per Gallon (lb/gal)?
Pound per Gallon (lb/gal) expresses mass in pound per unit volume in gallon, found by dividing a mass value by a volume value.
What is Gram per Cubic inch (g/in3)?
Gram per Cubic inch (g/in3) expresses mass in gram per unit volume in cubic inch, found by dividing a mass value by a volume value.
How do I convert pound per gallon to gram per cubic inch?
Multiply the pound per gallon value by 1.963603 to get the equivalent in gram per cubic inch. For example, 5 lb/gal × 1.963603 = 9.818017 g/in3.
Is this conversion exact?
Yes. Both units are defined using fixed metric and imperial conversion constants, so the factor 1.963603 is an exact, non-rounded value.
Can I convert gram per cubic inch back to pound per gallon?
Yes. Divide the gram per cubic inch value by 1.963603, or multiply it by 0.509268, to get pound per gallon.
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About converting pound per gallon to gram per cubic inch
Pound per Gallon (lb/gal) expresses mass in pound per unit volume in gallon, found by dividing a mass value by a volume value. Gram per Cubic inch (g/in3) expresses mass in gram per unit volume in cubic inch, found by dividing a mass value by a volume value.
Use this calculator to move between pound per gallon and gram 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.