Pound per Cubic foot (lb/ft3) expresses mass in pound per unit volume in cubic foot, found by dividing a mass value by a volume value.
Pound per Cubic foot to Pound per Gallon
Convert pound per cubic foot (lb/ft3) to pound per gallon (lb/gal) instantly with formula, conversion table, and FAQ.
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Convert pound per cubic foot (lb/ft3) to pound per gallon (lb/gal) instantly with formula, conversion table, and FAQ.
Context values
Some unit families need one extra value for a physically accurate result.
Pound per Gallon (lb/gal) expresses mass in pound per unit volume in gallon, found by dividing a mass value by a volume value.
lb/gal = lb/ft3 × 0.133681
Results update instantly for Pound per Cubic foot to Pound per Gallon conversions.
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Formula
lb/gal = lb/ft3 × 0.133681
lb/ft3 = lb/gal × 7.480519
Conversion table
| 1 lb/ft3 | 0.133681 lb/gal |
| 5 lb/ft3 | 0.668403 lb/gal |
| 10 lb/ft3 | 1.336806 lb/gal |
| 20 lb/ft3 | 2.673611 lb/gal |
| 50 lb/ft3 | 6.684028 lb/gal |
| 100 lb/ft3 | 13.368056 lb/gal |
| 500 lb/ft3 | 66.840278 lb/gal |
| 1000 lb/ft3 | 133.680556 lb/gal |
Related conversions
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How the formula works
Both pound per cubic foot and pound per gallon measure the same physical quantity (mass per unit volume), so converting between them is a single multiplication. Multiply a value in pound per cubic foot by 0.133681 to get pound per gallon. To reverse the conversion, multiply a pound per gallon value by 7.480519 to get back to pound per cubic foot.
Frequently asked questions
What is Pound per Cubic foot (lb/ft3)?
Pound per Cubic foot (lb/ft3) expresses mass in pound per unit volume in cubic foot, found by dividing a mass value by a volume value.
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.
How do I convert pound per cubic foot to pound per gallon?
Multiply the pound per cubic foot value by 0.133681 to get the equivalent in pound per gallon. For example, 5 lb/ft3 × 0.133681 = 0.668403 lb/gal.
Is this conversion exact?
Yes. Both units are defined using fixed metric and imperial conversion constants, so the factor 0.133681 is an exact, non-rounded value.
Can I convert pound per gallon back to pound per cubic foot?
Yes. Divide the pound per gallon value by 0.133681, or multiply it by 7.480519, to get pound per cubic foot.
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About converting pound per cubic foot to pound per gallon
Pound per Cubic foot (lb/ft3) expresses mass in pound per unit volume in cubic foot, found by dividing a mass value by a volume value. Pound per Gallon (lb/gal) expresses mass in pound per unit volume in gallon, found by dividing a mass value by a volume value.
Use this calculator to move between pound per cubic foot and pound per gallon accurately for science, engineering, manufacturing, or everyday density calculations. The Universal Converter uses exact unit factors, so results stay consistent across the site.