How do you calculate the weight of a steel pipe?

Use the formula: Weight (kg/m) = (OD − WT) × WT × 0.02466, where OD is the outside diameter in mm and WT is wall thickness in mm. Multiply by pipe length in meters for total weight.

What is the formula for pipe weight in kg?

The formula for carbon steel pipe weight in kg/m is: W = (OD − WT) × WT × 0.02466. For stainless steel, use 0.02491 instead of 0.02466. OD and WT must be in millimeters.

How much does a 4 inch Schedule 40 steel pipe weight per foot?

A 4-inch NPS Schedule 40 carbon steel pipe weighs 10.79 lb/ft (16.07 kg/m). OD = 4.500 inches (114.3 mm), wall thickness = 0.237 inches (6.02 mm).

How to Calculate Steel Pipe Weight — Formula, Chart & Calculator

Why Knowing Steel Pipe Weight Matters

Calculating steel pipe weight accurately is essential for:

Procurement & Quoting: Steel pipe is sold by weight (per ton or per piece). Accurate weight ensures fair pricing.
Shipping & Logistics: Container weight limits, freight cost calculation, and load planning.
Structural Design: Dead load calculations for pipe racks, supports, and buildings.
Installation Planning: Crane capacity, lifting equipment selection, and on-site handling.
Inventory Management: Warehouse floor loading, stock reconciliation by weight.

The Steel Pipe Weight Formula

Metric Formula (Most Common)

W (kg/m) = (OD − WT) × WT × 0.02466

Where:

W = Weight per meter (kg/m)
OD = Outside diameter of pipe (mm)
WT = Wall thickness of pipe (mm)
0.02466 = Constant derived from carbon steel density (7.85 g/cm³)

For stainless steel pipe: use 0.02491 instead of 0.02466 (density 7.93 g/cm³).

Imperial Formula (US / UK)

W (lb/ft) = (OD − WT) × WT × 10.69

Where:

W = Weight per foot (lb/ft)
OD = Outside diameter (inches)
WT = Wall thickness (inches)
10.69 = Constant derived from steel density (490 lb/ft³)

Worked Examples

Example 1: 4" Schedule 40 Seamless Pipe (Metric)

Given: OD = 114.3 mm, WT = 6.02 mm

Step 1: OD − WT = 114.3 − 6.02 = 108.28 mm

Step 2: 108.28 × 6.02 = 651.85

Step 3: 651.85 × 0.02466 = 16.07 kg/m

Total for 6-meter pipe: 16.07 × 6 = 96.42 kg per piece

Example 2: 2" Schedule 80 Galvanized Pipe (Metric)

Given: OD = 60.33 mm, WT = 5.54 mm

Step 1: OD − WT = 60.33 − 5.54 = 54.79 mm

Step 2: 54.79 × 5.54 = 303.54

Step 3: 303.54 × 0.02466 = 7.48 kg/m

Note: For galvanized pipe, add ~3-6% for zinc coating weight (not included in formula).

Example 3: 6" Schedule 40 Pipe (Imperial)

Given: OD = 6.625 in, WT = 0.280 in

Step 1: OD − WT = 6.625 − 0.280 = 6.345 in

Step 2: 6.345 × 0.280 = 1.7766

Step 3: 1.7766 × 10.69 = 18.99 lb/ft

Common Carbon Steel Pipe Weights — Quick Reference

NPS	Schedule	OD (mm)	WT (mm)	kg/m	lb/ft
1"	40	33.40	3.38	2.50	1.68
1"	80	33.40	4.55	3.24	2.17
2"	40	60.33	3.91	5.44	3.65
2"	80	60.33	5.54	7.48	5.02
3"	40	88.90	5.49	11.29	7.58
3"	80	88.90	7.62	15.27	10.25
4"	40	114.30	6.02	16.07	10.79
4"	80	114.30	8.56	22.32	14.98
6"	40	168.28	7.11	28.26	18.97
6"	80	168.28	10.97	42.56	28.57
8"	40	219.08	8.18	42.55	28.55
8"	80	219.08	12.70	64.64	43.39
10"	40	273.05	9.27	60.31	40.48
12"	40	323.85	10.31	79.73	53.53

Material Density Factors

Material	Metric Factor	Imperial Factor	Density (g/cm³)
Carbon Steel (ASTM A53/A106)	0.02466	10.69	7.85
Stainless Steel 304/304L	0.02491	10.80	7.93
Stainless Steel 316/316L	0.02504	10.85	7.98
Duplex Stainless 2205	0.02460	10.65	7.83
Alloy Steel (ASTM A335 P11)	0.02460	10.65	7.83
Aluminum 6061-T6	0.00850	3.70	2.70
Copper (C12200)	0.02800	12.10	8.94

Need Steel Pipe? Get a Quote by Weight

At Sino East Steel, we quote in USD per ton for all steel pipe products. Send us your pipe specifications and we'll provide a detailed quotation with per-piece and total weights.

Email: sinoeast3@163.com
WhatsApp: +86 186 2208 8833
Specify: Material grade, OD, wall thickness, length, quantity, destination

Also see: Steel Coil Weight Calculator | SCH 40 Dimensions & Weight Chart

How to Calculate Steel Pipe Weight — Complete Guide with Formula & Examples