Convert Pounds per UK gallon to Pounds per cubic foot
Convert Pounds per UK gallon (lb/gal (UK)) to Pounds per cubic foot (lb/ft³) instantly and accurately.
Conversion Formula
lb/ft³ = lb/gal (UK) × 6.228835459
About Pounds per UK gallon
The pound per UK gallon (lb/gal UK) equals ≈99.776 kg/m³, based on the avoirdupois pound and the UK gallon (4.54609 L). Used historically in British petroleum refining and Admiralty fuel specifications; the original UK specific-gravity tables reference lb/gal UK. Still encountered in some Commonwealth marine and aviation standards. 1 lb/gal (UK) ≈99.776 kg/m³ ≈6.228 lb/ft³.
About Pounds per cubic foot
The pound per cubic foot (lb/ft³) equals ≈16.018 kg/m³, widely used in US construction, soil mechanics, and insulation specifications. Softwood framing lumber averages 25-35 lb/ft³; compacted soil 90-130 lb/ft³; fresh water ≈62.43 lb/ft³; concrete 145-150 lb/ft³. ASTM standards for concrete, soil, and geotextiles routinely cite lb/ft³. 1 lb/ft³ = 0.45359237/0.028316846592 kg/m³ ≈16.018 kg/m³.
Quick Reference Table
| Pounds per UK gallon (lb/gal (UK)) | Pounds per cubic foot (lb/ft³) |
|---|---|
| 1 lb/gal (UK) | 6.22884 lb/ft³ |
| 2 lb/gal (UK) | 12.4577 lb/ft³ |
| 5 lb/gal (UK) | 31.1442 lb/ft³ |
| 10 lb/gal (UK) | 62.2884 lb/ft³ |
| 25 lb/gal (UK) | 155.721 lb/ft³ |
| 50 lb/gal (UK) | 311.442 lb/ft³ |
| 100 lb/gal (UK) | 622.884 lb/ft³ |