Standard 1-1/2" nominal Type L copper tubing has an ASTM B88 calibrated inside diameter of 1.505 inches, holding 0.0924 US gallons (1.147 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 | 0.092 gal | 0.35 L | 0.012 ft³ | 0.8 lbs | 1.1 lbs | 1.9 lbs |
| 2 ft | 0.185 gal | 0.70 L | 0.025 ft³ | 1.5 lbs | 2.3 lbs | 3.8 lbs |
| 5 ft | 0.462 gal | 1.75 L | 0.062 ft³ | 3.9 lbs | 5.7 lbs | 9.6 lbs |
| 10 ft | 0.924 gal | 3.50 L | 0.123 ft³ | 7.7 lbs | 11.4 lbs | 19.1 lbs |
| 20 ft | 1.848 gal | 6.99 L | 0.247 ft³ | 15.4 lbs | 22.8 lbs | 38.2 lbs |
| 50 ft | 4.62 gal | 17.5 L | 0.62 ft³ | 38.6 lbs | 57.0 lbs | 95.5 lbs |
| 100 ft | 9.24 gal | 35.0 L | 1.23 ft³ | 77.1 lbs | 114.0 lbs | 191.1 lbs |
| 250 ft | 23.10 gal | 87.4 L | 3.09 ft³ | 192.8 lbs | 285.0 lbs | 477.8 lbs |
| 500 ft | 46.20 gal | 174.8 L | 6.17 ft³ | 385.5 lbs | 570.0 lbs | 955.5 lbs |
Step-by-step mathematical demonstration using cylinder geometric principles and ASTM B88 specifications.
Nominal size is 1-1/2", but true inner diameter is 1.505 inches.
r = ID / 2 = 1.505 / 2 = 0.7525" Compute circular cross-section area using $A = \pi \times r^2$:
A = \pi \times (0.7525)^2 = 1.7789 sq in Multiply cross-sectional area by 12 inches (1 linear foot):
V_linear = 1.7789 \times 12 = 21.347 cu in/ft Divide cubic inches by 231 (cubic inches in 1 US Gallon):
Gallons/Ft = 21.347 / 231 = 0.0924 Gal/Ft Physical dimensions, pressure thresholds, and hydraulic velocity limits.
Primary Use Case: Commercial building potable supply trunks, hospital lab water systems, and primary HVAC heat exchangers.
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 1-1/2" nominal diameter:
Frequently asked engineering and volumetric capacity questions for 1-1/2" copper tubing.
A 100-foot run holds 9.24 US Gallons (34.98 Liters) of water, weighing approximately 77.1 lbs in fluid weight.