Pipe Volume Calculator
Updated Formulas shown
A 4 in pipe holds 0.653 gallons per foot, so 100 ft holds about 65.3 gallons.
Pipe volume
65.28 gal
247.1 liters
- Cubic feet
- 8.727
- Water weight
- 544.4 lb
- Gallons per foot
- 0.6528
Quick reference
| Inside diameter | Gal / ft | Gal / 100 ft |
|---|---|---|
| 0.5 in | 0.0102 | 1.0 |
| 0.75 in | 0.0229 | 2.3 |
| 1 in | 0.0408 | 4.1 |
| 1.5 in | 0.0918 | 9.2 |
| 2 in | 0.1632 | 16.3 |
| 3 in | 0.3672 | 36.7 |
| 4 in | 0.6528 | 65.3 |
| 6 in | 1.4688 | 146.9 |
| 8 in | 2.6112 | 261.1 |
| 12 in | 5.8752 | 587.5 |
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Frequently asked questions
Should I use inside or outside diameter?
Inside diameter — wall thickness varies by schedule (40, 80) and material.
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Estimates only. Check quantities with your supplier or contractor before ordering.