Pipes - Relative Capacity
Pipes relative capacity - the capacity of the larger pipe versus the smaller pipe:
The diagram above and table below are for steel pipes schedule 40.
For full table with larger sizes - rotate the screen!
| Larger Pipe | Smaller Pipe | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Nominal Size (inches) | |||||||||||||||||
| Nominal Size (inches) | Inside Area (sq. inches) | 1/8 | ¼ | 3/8 | ½ | ¾ | 1 | 1 ¼ | 1 ½ | 2 | 2 ½ | 3 | 3 ½ | 4 | 5 | 6 | 8 |
| Inside Area (sq. Inches) | |||||||||||||||||
| 0.06 | 0.1 | 0.19 | 0.3 | 0.53 | 0.86 | 1.5 | 2.04 | 3.36 | 4.79 | 7.39 | 9.89 | 12.73 | 20 | 28.89 | 50.02 | ||
| 1/8 | 0.06 | 1 | |||||||||||||||
| ¼ | 0.1 | 1.67 | 1 | ||||||||||||||
| 3/8 | 0.19 | 3.17 | 1.9 | 1 | |||||||||||||
| ½ | 0.3 | 5 | 3 | 1.58 | 1 | ||||||||||||
| ¾ | 0.53 | 8.83 | 5.3 | 2.79 | 1.77 | 1 | |||||||||||
| 1 | 0.86 | 14.33 | 8.6 | 4.53 | 2.87 | 1.62 | 1 | ||||||||||
| 1 ¼ | 1.5 | 25 | 15 | 7.89 | 5 | 2.83 | 1.74 | 1 | |||||||||
| 1 ½ | 2.04 | 34 | 20.4 | 10.74 | 6.8 | 3.85 | 2.37 | 1.36 | 1 | ||||||||
| 2 | 3.36 | 56 | 33.6 | 17.68 | 11.2 | 6.34 | 3.91 | 2.24 | 1.65 | 1 | |||||||
| 2 ½ | 4.79 | 79.83 | 47.9 | 25.21 | 15.97 | 9.04 | 5.57 | 3.19 | 2.35 | 1.43 | 1 | ||||||
| 3 | 7.39 | 123.17 | 73.9 | 38.89 | 24.63 | 13.94 | 8.59 | 4.93 | 3.62 | 2.2 | 1.54 | 1 | |||||
| 3 ½ | 9.89 | 164.83 | 98.9 | 52.05 | 32.97 | 18.66 | 11.5 | 6.59 | 4.85 | 2.94 | 2.06 | 1.34 | 1 | ||||
| 4 | 12.73 | 212.17 | 127.3 | 67 | 42.43 | 24.02 | 14.8 | 8.49 | 6.24 | 3.79 | 2.66 | 1.72 | 1.29 | 1 | |||
| 5 | 20 | 333.33 | 200 | 105.26 | 66.67 | 37.74 | 23.26 | 13.33 | 9.8 | 5.95 | 4.18 | 2.71 | 2.02 | 1.57 | 1 | ||
| 6 | 28.89 | 481.5 | 288.9 | 152.05 | 96.3 | 54.51 | 33.59 | 19.26 | 14.16 | 8.6 | 6.03 | 3.91 | 2.92 | 2.27 | 1.44 | 1 | |
| 8 | 50.02 | 833.67 | 500.2 | 263.26 | 166.73 | 94.38 | 58.16 | 33.35 | 24.52 | 14.89 | 10.44 | 6.77 | 5.06 | 3.93 | 2.5 | 1.73 | 1 |
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