▸ processconvert
Density and Mass

lb/galtolb/ft³

Convert pounds per US gallon (lb/gal) to pounds per cubic foot (lb/ft³).

Factor1 lb/gal = 7.480519 lb/ft³

Converter

lb/gal

Accepts numbers or expressions, e.g. 150 + 14.7

Result
62.3875lb/ft³

Rendered to 6 significant figures.

Formula

Formula
lb/ft³ = lb/gal × 7.480519

Multiply any value in pounds per US gallon by 7.480519 to obtain the value in pounds per cubic foot.

Worked example

Convert 8.34 lb/gal to lb/ft³.

  1. 01Start with 8.34 lb/gal.
  2. 02Multiply by the conversion factor: 8.34 × 7.480519 = 62.3875 lb/ft³.
Result8.34 lb/gal = 62.3875 lb/ft³

Conversion table

lb/gallb/ft³
17.4805
214.961
537.403
1074.805
20149.61
50374.03
100748.05
2001496.1
5003740.3
10007480.5

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from lb/gal to lb/ft³?
1 lb/gal equals 7.480519 lb/ft³. To convert, multiply the value in pounds per US gallon by 7.480519.
How do I convert 1 lb/gal to lb/ft³?
1 lb/gal = 7.48052 lb/ft³. For any value, multiply by 7.480519.
How do I convert lb/ft³ back to lb/gal?
Divide by the same factor — or equivalently, multiply by 0.1336806. So 1 lb/ft³ = 0.133681 lb/gal.
When would I need to convert pound per US gallon to pound per cubic foot?
Density conversions are critical for fluid property datasheets, hydraulic head calculations, and reconciling lab measurements (often g/cm³) with process simulator inputs (kg/m³).
Is the conversion exact?
The factor shown is precise to at least 7 significant figures. For most process-engineering work this is far better than instrument accuracy. For metrology or trade applications, refer to the relevant national standard (NIST, BIPM, ISO 80000).

Related conversions