Schedule 40 Pipe Weight Chart

Schedule 40 pipe weight depends mainly on the pipe's nominal size, outside diameter, and wall thickness. For carbon steel pipe, a 2-inch Schedule 40 pipe weighs about 3.65 lb/ft (5.43 kg/m), while a 4-inch Schedule 40 pipe weighs about 10.79 lb/ft (16.06 kg/m).The table below provides a practical Schedule 40 pipe weight chart from NPS 1/8 through 24, including outside diameter, wall thickness, inside diameter, weight per foot, and weight per meter.These values are based on standard Schedule 40 steel pipe dimensions. ASME B36.10 covers the standardized dimensions of welded and seamless wrought steel pipe, including wall thicknesses and nominal weights.

For common carbon steel sizes, NPS 1/2 Schedule 40 weighs approximately 0.85 lb/ft, NPS 2 weighs 3.65 lb/ft, NPS 4 weighs 10.79 lb/ft, NPS 6 weighs 18.97 lb/ft, and NPS 8 weighs 28.55 lb/ft.

This guide provides a practical reference for pipe weight calculations. It includes a detailed weight chart, an easy-to-use calculation formula, and the main factors that can cause actual pipe weight to vary from theoretical values.

Schedule 40 Pipe Weight Chart

The following chart is intended for estimating pipe weight, transportation loads, material quantities, and preliminary engineering calculations.

Schedule 40 Pipe Weight Chart (1/2″ – 24″)

NPS	DN	ID (in)	ID (mm)	Weight (lb/ft)	Weight (kg/m)
1/8"	6	0.269	6.83	0.24	0.37
1/4"	8	0.364	9.25	0.43	0.63
3/8"	10	0.493	12.52	0.57	0.84
1/2"	15	0.622	15.8	0.85	1.27
3/4"	20	0.824	20.93	1.13	1.69
1"	25	1.049	26.64	1.68	2.5
1-1/4"	32	1.38	35.05	2.27	3.39
1-1/2"	40	1.61	40.89	2.72	4.05
2"	50	2.067	52.5	3.66	5.44
2-1/2"	65	2.469	62.71	5.79	8.63
3"	80	3.068	77.93	7.58	11.29
3-1/2"	90	3.548	90.12	9.11	13.57
4"	100	4.026	102.26	10.79	16.07
5"	125	5.047	128.19	14.62	21.77
6"	150	6.065	154.05	18.99	28.26
8"	200	7.981	202.72	28.58	42.55
10"	250	10.02	254.51	40.52	60.29
12"	300	11.938	303.23	53.57	79.7
14"	350	13.124	333.35	63.5	94.55
16"	400	15	381	82.85	123.3
18"	450	16.876	428.67	104.76	155.87
20"	500	18.812	477.82	123.23	183.42
24"	600	22.624	574.65	171.45	255.24

The published Schedule 40 reference tables show the same standard dimensional pattern, with NPS, OD, wall thickness, ID, and nominal weight listed together.
Note: Weight values are nominal/theoretical values for plain-end steel pipe. Actual delivered weight can vary because of manufacturing tolerances, length tolerances, end finishing, coating, lining, and material density.

Common Schedule 40 Pipe Weights at a Glance

For quick reference:
1/2" SCH 40: 1.27 kg/m
1" SCH 40: 2.50 kg/m
2" SCH 40: 5.44 kg/m
3" SCH 40: 11.29 kg/m
4" SCH 40: 16.07 kg/m
6" SCH 40: 28.26 kg/m
8" SCH 40: 42.55 kg/m
10" SCH 40: 60.32 kg/m
12" SCH 40: 81.68 kg/m
These values are useful when preparing a material takeoff or comparing supplier quotations.

The standard tables in ASME B36.10M are based on key data points: NPS, OD, wall thickness, and plain-end weight. For example, 16" Sch 40 pipe has an OD of 16.000", a wall thickness of 0.500", and a weight of 82.85 lb/ft; 18" pipe has a wall thickness of 0.562" and weighs 104.76 lb/ft; 20" pipe has a wall thickness of 0.594" and weighs 123.23 lb/ft; and 24" pipe has a wall thickness of 0.688" and weighs 171.45 lb/ft.

What Is Schedule 40 Pipe Weight?

Schedule 40 pipe weight refers to the weight of a Schedule 40 pipe based on its size, wall thickness, and material. The Schedule 40 designation itself does not specify a pipe's exact weight.
Instead, pipe weight is determined by three main factors:
Outside diameter (OD)
Wall thickness (WT)
Material density
For carbon steel pipe, manufacturers and suppliers commonly list SCH 40 pipe weight in kg/m or lb/ft. These measurements make it easier to estimate the total material weight for a project.The pipe weight is useful for material takeoffs, shipping calculations, structural loads, handling, and procurement. Because Schedule 40 wall thickness varies with nominal pipe size, the weight per foot or meter also changes from one pipe size to another.For accurate purchasing, always check the NPS, outside diameter, wall thickness, material grade, and applicable pipe standard rather than relying on the Schedule 40 designation alone.

How Is Sch40 Pipe Weight Calculated?

For a plain-end carbon steel pipe, theoretical weight can be calculated from the pipe's annular cross-sectional area and steel density.
A commonly used formula is:
Weight (lb/ft) = 10.6802 × t × (OD − t)
Where:
t = wall thickness in inches
OD = outside diameter in inches
10.6802 incorporates the conversion factors and a carbon-steel density of approximately 0.2836 lb/in³.
For a 2-inch Schedule 40 pipe:
OD = 2.375 in
Wall thickness = 0.154 in
Therefore:
Weight ≈ 10.6802 × 0.154 × (2.375 − 0.154)
Weight ≈ 3.65 lb/ft
This calculated result agrees closely with standard Schedule 40 weight tables.

How Much Does Schedule 40 Pipe Weigh?

There is no single weight for Schedule 40 pipe.
The weight changes according to the nominal pipe size, outside diameter, wall dimensions, material density, and pipe length.

Pipe Size	Approx. Weight
1" SCH 40	2.50 kg/m
2" SCH 40	5.44 kg/m
3" SCH 40	11.29 kg/m
4" SCH 40	16.07 kg/m
6" SCH 40	28.26 kg/m
8" SCH 40	42.55 kg/m
10" SCH 40	60.32 kg/m
12" SCH 40	81.68 kg/m

As pipe size increases, the amount of steel per unit length generally increases. This causes larger Schedule 40 pipes to weigh significantly more than smaller sizes.For procurement, always identify the exact NPS and material grade before using a weight value in a quotation.

Schedule 40 Pipe Weight per Meter
kg/m is one of the most useful units for calculating steel pipe weight.
2" SCH 40 = 5.44 kg/m
3" SCH 40 = 11.29 kg/m
4" SCH 40 = 16.07 kg/m
6" SCH 40 = 28.26 kg/m
8" SCH 40 = 42.55 kg/m
To calculate the weight of a specific length:
Weight = kg/m × pipe length
For example, if you need 50 meters of 4-inch Schedule 40 pipe:
16.07 × 50 = 803.5 kg
The theoretical pipe weight is approximately 803.5 kg.

Schedule 40 Pipe Weight per Foot
US and other imperial-unit projects often use lb/ft instead of kg/m.
2" SCH 40 = 3.66 lb/ft
3" SCH 40 = 7.59 lb/ft
4" SCH 40 = 10.80 lb/ft
6" SCH 40 = 18.98 lb/ft
8" SCH 40 = 28.58 lb/ft
10" SCH 40 = 40.53 lb/ft
12" SCH 40 = 54.87 lb/ft
The approximate conversion is:
1 kg/m = 0.67197 lb/ft
Therefore:
16.07 kg/m × 0.67197 = 10.80 lb/ft
A 4-inch Schedule 40 carbon steel pipe weighs approximately 10.80 lb per foot.

How Much Does a 6-Meter Schedule 40 Pipe Weigh?
Many international steel pipe orders use 6-meter lengths.
The calculation is straightforward:
Weight per pipe = kg/m × pipe length
For a 4-inch Schedule 40 pipe:
16.07 × 6 = 96.42 kg
Therefore, one 6-meter 4-inch SCH 40 pipe weighs approximately 96.42 kg theoretically.

NPS	Weight (kg/m)	Approx. Weight per 6 m
1/2"	1.27	7.62 kg
1"	2.5	15.00 kg
2"	5.44	32.64 kg
3"	11.29	67.74 kg
4"	16.07	96.42 kg
6"	28.26	169.56 kg
8"	42.55	255.30 kg
10"	60.32	361.92 kg
12"	81.68	490.08 kg

FAQ

What is the weight of Schedule 40 pipe?
The weight depends on the pipe size. For example, a 2-inch SCH 40 carbon steel pipe weighs approximately 5.44 kg/m, while a 4-inch SCH 40 pipe weighs approximately 16.07 kg/m.

How much does 4-inch Schedule 40 pipe weigh?
A 4-inch Schedule 40 carbon steel pipe weighs approximately 16.07 kg/m or 10.80 lb/ft.
A 6-meter pipe weighs approximately 96.42 kg theoretically.

How much does 2-inch Schedule 40 pipe weigh?
A 2-inch Schedule 40 carbon steel pipe weighs approximately 5.44 kg/m, equivalent to about 3.66 lb/ft.

How much does Schedule 40 pipe weigh per foot?
The weight depends on the NPS size. For example, 2-inch SCH 40 weighs about 3.66 lb/ft, while 4-inch SCH 40 weighs about 10.80 lb/ft.

How much does Schedule 40 pipe weigh per meter?
The weight varies by pipe size. A 2-inch SCH 40 pipe weighs approximately 5.44 kg/m, and a 4-inch SCH 40 pipe weighs approximately 16.07 kg/m.

What is the formula for Schedule 40 pipe weight?
For theoretical carbon steel pipe weight:
W = 0.02466 × (D − t) × t
where W is kg/m, D is outside diameter in mm, and t is wall thickness in mm.

Conclusion

A Schedule 40 pipe weight chart is useful for much more than checking how heavy one pipe is.It helps buyers estimate project tonnage, compare quotations, calculate transportation requirements, and prepare preliminary shipping plans.
The most commonly used values include:
2" SCH 40: 5.44 kg/m
3" SCH 40: 11.29 kg/m
4" SCH 40: 16.07 kg/m
6" SCH 40: 28.26 kg/m
8" SCH 40: 42.55 kg/m
10" SCH 40: 60.32 kg/m
12" SCH 40: 81.68 kg/m

For an accurate commercial quotation, theoretical chart values should be combined with the actual pipe specification, length, quantity, coating, and packing requirements.If you are sourcing Schedule 40 carbon steel pipe, send the required NPS, grade, length, quantity, and destination to your supplier. They can then confirm the appropriate pipe specification and estimated shipment weight.

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