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 Gram per Cup
Convert pound per cubic foot (lb/ft3) to gram per cup (g/cup) instantly with formula, conversion table, and FAQ.
Reserved for a responsive leaderboard above the conversion details.
Professional calculator style
World-scale conversion engine
30+ categories
6,500+ units
Instant results
Offline ready
Density calculator
Density Converter
Convert pound per cubic foot (lb/ft3) to gram per cup (g/cup) instantly with formula, conversion table, and FAQ.
Context values
Some unit families need one extra value for a physically accurate result.
Gram per Cup (g/cup) expresses mass in gram per unit volume in cup, found by dividing a mass value by a volume value.
g/cup = lb/ft3 × 3.78978
Results update instantly for Pound per Cubic foot to Gram per Cup conversions.
Reserved above the conversion cards and below the converter.
Formula
g/cup = lb/ft3 × 3.78978
lb/ft3 = g/cup × 0.263868
Conversion table
| 1 lb/ft3 | 3.78978 g/cup |
| 5 lb/ft3 | 18.9489 g/cup |
| 10 lb/ft3 | 37.8978 g/cup |
| 20 lb/ft3 | 75.7956 g/cup |
| 50 lb/ft3 | 189.489 g/cup |
| 100 lb/ft3 | 378.978 g/cup |
| 500 lb/ft3 | 1894.890001 g/cup |
| 1000 lb/ft3 | 3789.780001 g/cup |
Related conversions
Reserved between the cards and the FAQ so the page stays balanced.
How the formula works
Both pound per cubic foot and gram per cup 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 3.78978 to get gram per cup. To reverse the conversion, multiply a gram per cup value by 0.263868 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 Gram per Cup (g/cup)?
Gram per Cup (g/cup) expresses mass in gram per unit volume in cup, found by dividing a mass value by a volume value.
How do I convert pound per cubic foot to gram per cup?
Multiply the pound per cubic foot value by 3.78978 to get the equivalent in gram per cup. For example, 5 lb/ft3 × 3.78978 = 18.9489 g/cup.
Is this conversion exact?
Yes. Both units are defined using fixed metric and imperial conversion constants, so the factor 3.78978 is an exact, non-rounded value.
Can I convert gram per cup back to pound per cubic foot?
Yes. Divide the gram per cup value by 3.78978, or multiply it by 0.263868, to get pound per cubic foot.
Reserved between the FAQ and the article so the page stays balanced.
About converting pound per cubic foot to gram per cup
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. Gram per Cup (g/cup) expresses mass in gram per unit volume in cup, found by dividing a mass value by a volume value.
Use this calculator to move between pound per cubic foot and gram 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.