Pipe Weight Calculator
Find the weight per foot and total weight of steel, stainless or aluminum pipe from its size and schedule or its outside diameter and wall thickness. NPS 1/8 to 18 with the DN, Schedule 5S to XXS, in US or metric units, with the weight full of water.
Your numbers
Sch 40 and STD are the same up to 10 in, Sch 80 and XS up to 8 in. 5S and 10S are the stainless (B36.19M) walls.
The size table is the steel pipe table. For another material it applies that density to the same dimensions; check the maker's chart.
Optional, for the weight of a length and the order. Wheatland sells standard pipe in 21, 24 and 25 ft lengths.
Weight per foot
3.66 lb/ft (5.44 kg/m)
- Pipe used
- OD 2.375 in, wall 0.154 in, ID 2.067 in
- One length
- –
- All pieces
- –
- Full of water, per foot
- 5.11 lb/ft (7.61 kg/m)
Pipe plus the water inside it, at 62.4 lb/ft³ (1,000 kg/m³). For pipe supports and hangers.
Plain-end weight. Threads and couplings add a little: Wheatland lists 4 in Sch 40 at 10.80 lb/ft plain end and 10.92 lb/ft threaded and coupled.
An estimate from nominal dimensions. ASTM A53 lets the actual weight vary by 10% either way; the mill certificate or the scale has the real number.
The calculation runs in your browser and ParrotNotes does not store your numbers. They sit in the page address so you can bookmark or share the result.
How pipe weight is worked out
A pipe's weight per foot is the area of its metal ring times its density. The ring is π × (OD − t) × t, where OD is the outside diameter and t the wall thickness; that is the same as the outer circle minus the bore. Times 12 inches and the density in pounds per cubic inch, it gives pounds per foot. For carbon steel at 7.85 g/cm³ the constants come to 10.69, the plain-end weight formula used in the ASME B36.10M and ASTM A53 tables.
Worked example: 2 inch Schedule 40 pipe is 2.375 in OD with a 0.154 in wall. 10.69 × (2.375 − 0.154) × 0.154 = 3.66 lb/ft, or 5.44 kg/m. Ten 21 ft lengths are 210 ft of pipe and about 768 lb on the truck.
Nominal size, outside diameter and schedule
The nominal pipe size (NPS) is a name, not a measurement. Every pipe of one NPS has the same outside diameter, so fittings match, and the schedule sets the wall: the higher the schedule, the thicker the wall and the smaller the bore. 2 inch pipe is 2.375 in OD whether it is Schedule 10, 40 or 160. From 14 in up, the NPS is the outside diameter.
Metric orders often give the DN, the metric designator: DN 50 is NPS 2, DN 100 is NPS 4. The calculator's DN designators are the ones in Wheatland's ASTM A53 tables, and its millimeter outside diameters are the inch figures × 25.4. Stainless pipe uses the S schedules (5S, 10S, 40S, 80S) of ASME B36.19M, on the same outside diameters.
Steel pipe weight chart, Schedule 40 and 80
Plain-end weights calculated for carbon steel at 7.85 g/cm³ from the table's outside diameters and walls. Where Wheatland prints the same size, they agree with its tables to 0.01 lb/ft.
| NPS | DN | OD (in) | Sch 40 wall (in) | Sch 40 (lb/ft) | Sch 80 wall (in) | Sch 80 (lb/ft) |
|---|---|---|---|---|---|---|
| 1/2 | 15 | 0.84 | 0.109 | 0.85 | 0.147 | 1.09 |
| 3/4 | 20 | 1.05 | 0.113 | 1.13 | 0.154 | 1.48 |
| 1 | 25 | 1.315 | 0.133 | 1.68 | 0.179 | 2.17 |
| 1 1/4 | 32 | 1.66 | 0.14 | 2.28 | 0.191 | 3 |
| 1 1/2 | 40 | 1.9 | 0.145 | 2.72 | 0.2 | 3.64 |
| 2 | 50 | 2.375 | 0.154 | 3.66 | 0.218 | 5.03 |
| 2 1/2 | 65 | 2.875 | 0.203 | 5.8 | 0.276 | 7.67 |
| 3 | 80 | 3.5 | 0.216 | 7.58 | 0.3 | 10.26 |
| 3 1/2 | 90 | 4 | 0.226 | 9.12 | 0.318 | 12.52 |
| 4 | 100 | 4.5 | 0.237 | 10.8 | 0.337 | 15 |
| 5 | 125 | 5.563 | 0.258 | 14.63 | 0.375 | 20.8 |
| 6 | 150 | 6.625 | 0.28 | 18.99 | 0.432 | 28.6 |
| 8 | 200 | 8.625 | 0.322 | 28.58 | 0.5 | 43.43 |
| 10 | 250 | 10.75 | 0.365 | 40.53 | 0.594 | 64.5 |
| 12 | 300 | 12.75 | 0.406 | 53.58 | 0.688 | 88.72 |
Weight full of water
Supports, hangers and a rack loaded with pipe in service carry the pipe and what is in it. The calculator adds the water inside at 1,000 kg/m³ (62.4 lb/ft³): π/4 × ID² × 12 inches of water per foot. 4 inch Schedule 40 pipe holds about 5.52 lb of water a foot, so it weighs 16.32 lb/ft full; Wheatland's sprinkler pipe sheet prints 16.311 lb/ft. For the volume in gallons or liters, use the pipe volume calculator.
For distributor and industrial sales: what to write down
A pipe order is a string of details said on the call: size and schedule, the spec (A53, A106, A312 for stainless), welded or made without a seam, black or galvanized, plain, threaded or grooved ends, the length, how many, and when and where it ships. The weight on the quote comes from those details, so does the freight, and one wrong word ships the wrong pipe.
Sources, each read on 2026-10-29. Results are estimates from nominal dimensions; the mill certificate or the scale has the real weight:
- Wheatland Tube, Standard Pipe brochure (WST-042125): ASTM A53 Schedule 40 and 80 OD, wall, DN and plain-end weights, permissible variations
- Wheatland Tube, Fire Sprinkler Pipe Schedule 10 and 40 submittal sheet (WFS-080823): walls, weights and water-filled weights
- The Engineering ToolBox, ASME/ANSI B36.10/19 carbon, alloy and stainless steel pipe dimensions: walls for the other schedules
More for distributor and industrial sales: Industrial distributor sales, Distributor sales, What is an RFQ, Quote follow-up email.
The pipe order comes in on the call
Size, schedule, spec, ends, finish, lengths and how many: buyers say all of it on the phone or at the counter. Record the call in ParrotNotes and get a transcript, a summary and the action items, so the quote and the freight weight match what was asked for.
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