密度是每单位体积的质量，通常以每立方米（kg/m³）为单位的物质。
1 lb/in³ = 231.001 lb/gal
1 lb/gal = 0.004 lb/in³
例子:
将15 每立方英寸转换为每加仑磅（美国）：
15 lb/in³ = 3,465.012 lb/gal
| 每立方英寸 | 每加仑磅（美国） |
|---|---|
| 0.01 lb/in³ | 2.31 lb/gal |
| 0.1 lb/in³ | 23.1 lb/gal |
| 1 lb/in³ | 231.001 lb/gal |
| 2 lb/in³ | 462.002 lb/gal |
| 3 lb/in³ | 693.002 lb/gal |
| 5 lb/in³ | 1,155.004 lb/gal |
| 10 lb/in³ | 2,310.008 lb/gal |
| 20 lb/in³ | 4,620.016 lb/gal |
| 30 lb/in³ | 6,930.024 lb/gal |
| 40 lb/in³ | 9,240.031 lb/gal |
| 50 lb/in³ | 11,550.039 lb/gal |
| 60 lb/in³ | 13,860.047 lb/gal |
| 70 lb/in³ | 16,170.055 lb/gal |
| 80 lb/in³ | 18,480.063 lb/gal |
| 90 lb/in³ | 20,790.071 lb/gal |
| 100 lb/in³ | 23,100.078 lb/gal |
| 250 lb/in³ | 57,750.196 lb/gal |
| 500 lb/in³ | 115,500.392 lb/gal |
| 750 lb/in³ | 173,250.588 lb/gal |
| 1000 lb/in³ | 231,000.784 lb/gal |
| 10000 lb/in³ | 2,310,007.845 lb/gal |
| 100000 lb/in³ | 23,100,078.447 lb/gal |
规则