Line Pipe Weight Calculator
Calculate the weight of steel pipes per foot and total length. Select pipe size, schedule, and material for accurate weight estimation.
Pipe Weight
Per Foot / Per Meter
Pipe Specifications
Standard Pipe Weight Reference (Carbon Steel)
| NPS (in) | Schedule | OD (in) | Wall (in) | Weight (lb/ft) | Weight (kg/m) |
|---|---|---|---|---|---|
| 2" | Sch 40 | 2.375 | 0.154 | 3.65 | 5.43 |
| 2" | Sch 80 | 2.375 | 0.218 | 5.02 | 7.47 |
| 3" | Sch 40 | 3.500 | 0.216 | 7.58 | 11.28 |
| 3" | Sch 80 | 3.500 | 0.300 | 10.25 | 15.25 |
| 4" | Sch 40 | 4.500 | 0.237 | 10.79 | 16.06 |
| 4" | Sch 80 | 4.500 | 0.337 | 14.98 | 22.29 |
| 6" | Sch 40 | 6.625 | 0.280 | 18.97 | 28.23 |
| 6" | Sch 80 | 6.625 | 0.432 | 28.57 | 42.52 |
| 8" | Sch 40 | 8.625 | 0.322 | 28.55 | 42.49 |
| 8" | Sch 80 | 8.625 | 0.500 | 43.39 | 64.58 |
| 10" | Sch 40 | 10.750 | 0.365 | 40.48 | 60.24 |
| 10" | Sch 80 | 10.750 | 0.594 | 64.43 | 95.90 |
| 12" | Sch 40 | 12.750 | 0.406 | 53.57 | 79.73 |
| 12" | Sch 80 | 12.750 | 0.688 | 88.63 | 131.92 |
Pipe Weight Formula
Formula for Pipe Weight:
Weight (lb/ft) = 10.68 × (OD - Wall) × Wall (for carbon steel)
Weight (lb/ft) = π × (OD² - ID²) / 4 × Density
Where:
- OD = Outer Diameter (inches)
- ID = Inner Diameter = OD - 2×Wall
- Wall = Wall Thickness (inches)
- Density = Material density (lbs/in³)
Frequently Asked Questions
How do you calculate pipe weight?
Pipe weight is calculated using the formula: Weight = π × (OD² - ID²) / 4 × Density × Length
For carbon steel, a simplified formula is: Weight (lb/ft) = 10.68 × (OD - Wall) × Wall
What is the weight of Schedule 40 pipe per foot?
Common Schedule 40 pipe weights per foot:
- 2" pipe: 3.65 lb/ft
- 4" pipe: 10.79 lb/ft
- 6" pipe: 18.97 lb/ft
- 8" pipe: 28.55 lb/ft
- 10" pipe: 40.48 lb/ft
- 12" pipe: 53.57 lb/ft
How much does a 20-foot pipe weigh?
The weight of a 20-foot pipe depends on the diameter and schedule. For example:
- 4" Schedule 40: 20 ft × 10.79 lb/ft = 215.8 lbs
- 6" Schedule 40: 20 ft × 18.97 lb/ft = 379.4 lbs
- 8" Schedule 40: 20 ft × 28.55 lb/ft = 571 lbs
- 12" Schedule 40: 20 ft × 53.57 lb/ft = 1,071 lbs
What is the difference between Schedule 40 and Schedule 80 pipe?
Schedule 80 pipe has a thicker wall than Schedule 40, making it stronger and heavier. For 4" pipe:
- Sch 40: Wall = 0.237", Weight = 10.79 lb/ft
- Sch 80: Wall = 0.337", Weight = 14.98 lb/ft (39% heavier)
How do you convert pipe weight from lb/ft to kg/m?
To convert lb/ft to kg/m: multiply by 1.488. Example: 10 lb/ft × 1.488 = 14.88 kg/m.
Our calculator automatically converts between units for your convenience.
What is the weight of stainless steel pipe vs carbon steel?
Stainless steel is slightly denser than carbon steel (0.289 vs 0.2836 lb/in³), so stainless pipe is about 2% heavier. A 4" Schedule 40 carbon steel pipe weighs 10.79 lb/ft, while stainless steel would weigh approximately 11.00 lb/ft.
How accurate is this calculator?
Our calculator provides industry-standard weight estimates based on ANSI/ASME B36.10 and B36.19 specifications. Actual weights may vary slightly due to manufacturing tolerances (±5-10%).
Why is pipe weight important for projects?
Pipe weight is critical for:
- Shipping and freight cost estimation
- Structural support calculations
- Material procurement and budgeting
- Lifting and handling equipment selection
- Pipeline buoyancy and anchoring design