Standard 1" nominal Type L copper tubing has an ASTM B88 calibrated inside diameter of 1.025 inches, holding 0.0429 US gallons (0.533 liters per meter) per linear foot. Part of our Copper 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 copper pipe runs filled with potable water at 60°F.
| Pipe Length (Ft) | US Gallons | Liters | Cubic Feet (ft³) | Water Weight (lbs) | Dry Copper (lbs) | Total Wet Weight |
|---|---|---|---|---|---|---|
| 1 ft | 0.043 gal | 0.16 L | 0.006 ft³ | 0.4 lbs | 0.7 lbs | 1.0 lbs |
| 2 ft | 0.086 gal | 0.32 L | 0.011 ft³ | 0.7 lbs | 1.3 lbs | 2.0 lbs |
| 5 ft | 0.214 gal | 0.81 L | 0.029 ft³ | 1.8 lbs | 3.3 lbs | 5.1 lbs |
| 10 ft | 0.429 gal | 1.62 L | 0.057 ft³ | 3.6 lbs | 6.6 lbs | 10.1 lbs |
| 20 ft | 0.858 gal | 3.25 L | 0.115 ft³ | 7.2 lbs | 13.1 lbs | 20.3 lbs |
| 50 ft | 2.15 gal | 8.1 L | 0.29 ft³ | 17.9 lbs | 32.8 lbs | 50.6 lbs |
| 100 ft | 4.29 gal | 16.2 L | 0.57 ft³ | 35.8 lbs | 65.5 lbs | 101.3 lbs |
| 250 ft | 10.72 gal | 40.6 L | 1.43 ft³ | 89.5 lbs | 163.8 lbs | 253.2 lbs |
| 500 ft | 21.45 gal | 81.2 L | 2.86 ft³ | 179.0 lbs | 327.5 lbs | 506.5 lbs |
Step-by-step mathematical demonstration using cylinder geometric principles and ASTM B88 specifications.
Nominal size is 1", but true inner diameter is 1.025 inches.
r = ID / 2 = 1.025 / 2 = 0.5125" Compute circular cross-section area using $A = \pi \times r^2$:
A = \pi \times (0.5125)^2 = 0.8252 sq in Multiply cross-sectional area by 12 inches (1 linear foot):
V_linear = 0.8252 \times 12 = 9.902 cu in/ft Divide cubic inches by 231 (cubic inches in 1 US Gallon):
Gallons/Ft = 9.902 / 231 = 0.0429 Gal/Ft Physical dimensions, pressure thresholds, and hydraulic velocity limits.
Primary Use Case: Ideal for main water service lines entering single-family homes and luxury residences with multiple simultaneous shower demands.
Explore adjacent diameter calculations or compare with different copper types (Type K vs Type L).
Compare fluid holding capacity, wall thickness, and weight against other standard piping materials for 1" nominal diameter:
Frequently asked engineering and volumetric capacity questions for 1" copper tubing.
A 100-foot run of 1-inch Type L copper pipe holds 4.29 US Gallons (16.24 Liters) of water.