Density / lb/US gal → lb/ft³
Convert Pounds per US gallon to Pounds per cubic foot
Convert mass per unit volume in SI and customary units. Convert Pounds per US gallon (lb/US gal) to Pounds per cubic foot (lb/ft³). Find the formula, worked examples, unit definitions, and practical guidance below.
Reverse: Pounds per cubic foot to Pounds per US gallon →
How to convert Pounds per US gallon to pounds per cubic foot
Density connects mass and volume for a specified material and state. Specific gravity needs a reference density and is not directly treated as a density unit.
Use x for the value in lb/US gal, b for the intermediate value in kg/m³, and y for the result in lb/ft³.
lb/ft³ = lb/US gal × 119.82642731689663 ÷ 16.018463373960138
Worked examples
10 lb/US gal ≈ 74.8051948052 lb/ft³
Step 1: (10 × 119.826427317) ≈ 1198.26427317 kg/m³.
Step 2: 1198.26427317 ÷ 16.018463374 ≈ 74.8051948052 lb/ft³.20 lb/US gal ≈ 149.61038961 lb/ft³
Step 1: (20 × 119.826427317) ≈ 2396.52854634 kg/m³.
Step 2: 2396.52854634 ÷ 16.018463374 ≈ 149.61038961 lb/ft³.
Results are rounded to 12 significant digits. Converting units does not increase the precision of the original measurement. Very large or small values outside JavaScript’s finite numeric range are rejected.
About Pounds per US gallon
Pounds per US gallon (lb/US gal) measures density under the conventions above. The base value in kg/m³ is (x × 119.826427317), where x is the numerical value in lb/US gal. Factors shown here are rounded for display; calculations use the stored factor.
About Pounds per cubic foot
Pounds per cubic foot (lb/ft³) measures density under the conventions above. The base value in kg/m³ is (x × 16.018463374), where x is the numerical value in lb/ft³. Factors shown here are rounded for display; calculations use the stored factor.
Definitions and sources
Carry the same physical assumptions into subsequent physics calculations.
Pounds per US gallon to pounds per cubic foot reference table
| Pounds per US gallon (lb/US gal) | Pounds per cubic foot (lb/ft³) |
|---|---|
| 1 | 7.48051948052 |
| 5 | 37.4025974026 |
| 10 | 74.8051948052 |
| 25 | 187.012987013 |
| 50 | 374.025974026 |
| 100 | 748.051948052 |
| 1000 | 7480.51948052 |
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