Standard 1" nominal Type K copper tubing has an ASTM B88 calibrated inside diameter of 0.995 inches, holding 0.0404 US gallons (0.502 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 | 0.040 gal | 0.15 L | 0.005 ft³ | 0.3 lbs | 0.8 lbs | 1.2 lbs |
| 2 ft | 0.081 gal | 0.31 L | 0.011 ft³ | 0.7 lbs | 1.7 lbs | 2.4 lbs |
| 5 ft | 0.202 gal | 0.77 L | 0.027 ft³ | 1.7 lbs | 4.2 lbs | 5.9 lbs |
| 10 ft | 0.404 gal | 1.53 L | 0.054 ft³ | 3.4 lbs | 8.4 lbs | 11.8 lbs |
| 20 ft | 0.808 gal | 3.06 L | 0.108 ft³ | 6.7 lbs | 16.8 lbs | 23.5 lbs |
| 50 ft | 2.02 gal | 7.7 L | 0.27 ft³ | 16.9 lbs | 41.9 lbs | 58.8 lbs |
| 100 ft | 4.04 gal | 15.3 L | 0.54 ft³ | 33.7 lbs | 83.9 lbs | 117.6 lbs |
| 250 ft | 10.10 gal | 38.3 L | 1.35 ft³ | 84.3 lbs | 209.8 lbs | 294.0 lbs |
| 500 ft | 20.20 gal | 76.5 L | 2.70 ft³ | 168.5 lbs | 419.5 lbs | 588.0 lbs |
Step-by-step mathematical demonstration using cylinder geometric principles and ASTM B88 specifications.
Nominal size is 1", but true inner diameter is 0.995 inches.
r = ID / 2 = 0.995 / 2 = 0.4975" Compute circular cross-section area using $A = \pi \times r^2$:
A = \pi \times (0.4975)^2 = 0.7776 sq in Multiply cross-sectional area by 12 inches (1 linear foot):
V_linear = 0.7776 \times 12 = 9.331 cu in/ft Divide cubic inches by 231 (cubic inches in 1 US Gallon):
Gallons/Ft = 9.331 / 231 = 0.0404 Gal/Ft Physical dimensions, pressure thresholds, and hydraulic velocity limits.
Primary Use Case: Commercial underground water lines and heavy-duty buried utility pipes requiring maximum soil corrosion resistance.
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 contains 4.04 US Gallons (15.29 Liters) of water.