Standard 3/4" nominal Schedule 80 PVC pipe has an exact inside diameter of 0.742 inches, holding 0.0225 US gallons (0.279 liters per meter) per linear foot. Part of our PVC Pipe Volume Hub and universal Pipe Volume Calculator suite.
Calculations are based on cylindrical formula \(V = \pi r^2 L\). Verify dimensions against manufacturer specs for code submittals.
Instant capacity and weight lookup table for common pipe lengths filled with water at 60°F (15.5°C).
| Pipe Length (Ft) | US Gallons | Liters | Cubic Feet (ft³) | Water Weight (lbs) | Dry Pipe (lbs) | Total Wet Weight |
|---|---|---|---|---|---|---|
| 1 ft | 0.022 gal | 0.09 L | 0.003 ft³ | 0.2 lbs | 0.3 lbs | 0.5 lbs |
| 2 ft | 0.045 gal | 0.17 L | 0.006 ft³ | 0.4 lbs | 0.5 lbs | 0.9 lbs |
| 5 ft | 0.112 gal | 0.43 L | 0.015 ft³ | 0.9 lbs | 1.4 lbs | 2.3 lbs |
| 10 ft | 0.225 gal | 0.85 L | 0.030 ft³ | 1.9 lbs | 2.7 lbs | 4.6 lbs |
| 20 ft | 0.450 gal | 1.70 L | 0.060 ft³ | 3.8 lbs | 5.5 lbs | 9.2 lbs |
| 50 ft | 1.13 gal | 4.3 L | 0.15 ft³ | 9.4 lbs | 13.7 lbs | 23.1 lbs |
| 100 ft | 2.25 gal | 8.5 L | 0.30 ft³ | 18.8 lbs | 27.3 lbs | 46.1 lbs |
| 250 ft | 5.63 gal | 21.3 L | 0.75 ft³ | 47.0 lbs | 68.3 lbs | 115.3 lbs |
| 500 ft | 11.25 gal | 42.5 L | 1.50 ft³ | 94.0 lbs | 136.5 lbs | 230.5 lbs |
Step-by-step mathematical demonstration using cylinder geometric principles and ASTM D1785 specifications.
Nominal size is 3/4", but true inner diameter is 0.742 inches.
r = ID / 2 = 0.742 / 2 = 0.3710" Compute circular cross-section area using $A = \pi \times r^2$:
A = \pi \times (0.3710)^2 = 0.4324 sq in Multiply cross-sectional area by 12 inches (1 linear foot):
V_linear = 0.4324 \times 12 = 5.189 cu in/ft Divide cubic inches by 231 (cubic inches in 1 US Gallon):
Gallons/Ft = 5.189 / 231 = 0.0225 Gal/Ft Physical dimensions, pressure thresholds, and hydraulic velocity limits.
Primary Use Case: Ideal for industrial water treatment skids, high-pressure pump discharge headers, and corrosive chemical delivery.
Explore adjacent diameter calculations or compare with different pressure schedules.
Compare fluid holding capacity, wall thickness, and weight against other standard piping materials for 3/4" nominal diameter:
Frequently asked engineering and volumetric capacity questions for 3/4" PVC.
A 100-foot run holds 2.25 US Gallons (8.52 Liters) of water.