Weight Chart

Theoretical weights of round, hex, square and flat bars, pipes, plates, sheets and circles – in steel, stainless, nickel alloys, titanium, copper, brass, aluminium and plastics. Use the calculator or the ready-reckoner tables.

Weight Calculator 6 Ready Reckoners 40+ Material Densities

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Weight Calculator

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Choose a shape and material, enter the dimensions – weight per metre, per piece and total update instantly.

Material Diameter mm Across flats mm Side mm Width mm Outside diameter mm Wall thickness mm Inside diameter mm (0 = solid circle) Length mm Width mm Thickness mm Length m Quantity pcs

Weight per metre: –
Weight per piece: –
Total weight: –

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Weight Tables

Theoretical weights for common sizes. For other materials, multiply the carbon-steel value by the density factor below.

kg/m = 0.7854 × D² × density ÷ 1000

Round bar weight per metre
Dia (mm)	Carbon / Alloy Steel kg/m	Stainless 304 kg/m	Aluminium kg/m	Brass kg/m
6	0.22	0.22	0.08	0.24
8	0.39	0.40	0.14	0.43
10	0.62	0.62	0.21	0.67
12	0.89	0.90	0.31	0.96
14	1.21	1.22	0.42	1.31
16	1.58	1.59	0.54	1.71
18	2.00	2.02	0.69	2.16
20	2.47	2.49	0.85	2.67
22	2.98	3.01	1.03	3.23
25	3.85	3.89	1.33	4.17
28	4.83	4.88	1.66	5.23
30	5.55	5.61	1.91	6.01
32	6.31	6.38	2.17	6.84
35	7.55	7.63	2.60	8.18
38	8.90	8.99	3.06	9.64
40	9.86	9.97	3.39	10.68
45	12.48	12.61	4.29	13.52
50	15.41	15.57	5.30	16.69
55	18.65	18.84	6.41	20.19
60	22.20	22.42	7.63	24.03
65	26.05	26.31	8.96	28.21
70	30.21	30.52	10.39	32.71
75	34.68	35.03	11.93	37.55
80	39.46	39.86	13.57	42.73
90	49.94	50.45	17.18	54.07
100	61.65	62.28	21.21	66.76
110	74.60	75.36	25.66	80.78
120	88.78	89.69	30.54	96.13
125	96.33	97.32	33.13	104.31
130	104.19	105.26	35.84	112.82
140	120.84	122.07	41.56	130.85
150	138.72	140.13	47.71	150.21
160	157.83	159.44	54.29	170.90
175	188.81	190.74	64.94	204.45
180	199.76	201.79	68.71	216.30
200	246.62	249.13	84.82	267.04
220	298.40	301.45	102.64	323.11
250	385.34	389.26	132.54	417.24
275	466.26	471.01	160.37	504.86
300	554.88	560.54	190.85	600.83

kg/m = 0.866 × A/F² × density ÷ 1000 (A/F = across flats)

Hexagon bar weight per metre
A/F (mm)	Carbon / Alloy Steel kg/m	Stainless 304 kg/m	Brass kg/m	Aluminium kg/m
8	0.44	0.44	0.47	0.15
10	0.68	0.69	0.74	0.23
12	0.98	0.99	1.06	0.34
13	1.15	1.16	1.24	0.40
14	1.33	1.35	1.44	0.46
17	1.96	1.98	2.13	0.68
19	2.45	2.48	2.66	0.84
22	3.29	3.32	3.56	1.13
24	3.92	3.96	4.24	1.35
27	4.96	5.01	5.37	1.70
30	6.12	6.18	6.63	2.10
32	6.96	7.03	7.54	2.39
36	8.81	8.90	9.54	3.03
41	11.43	11.54	12.37	3.93
46	14.39	14.53	15.58	4.95
50	17.00	17.17	18.40	5.85
55	20.56	20.77	22.27	7.07
60	24.47	24.72	26.50	8.42
65	28.72	29.02	31.10	9.88
70	33.31	33.65	36.07	11.46
75	38.24	38.63	41.41	13.15
80	43.51	43.95	47.11	14.96
90	55.07	55.63	59.63	18.94
100	67.98	68.68	73.61	23.38

kg/m = side² × density ÷ 1000

Square bar weight per metre
Side (mm)	Carbon / Alloy Steel kg/m	Stainless 304 kg/m	Aluminium kg/m	Brass kg/m
6	0.28	0.29	0.10	0.31
8	0.50	0.51	0.17	0.54
10	0.79	0.79	0.27	0.85
12	1.13	1.14	0.39	1.22
16	2.01	2.03	0.69	2.18
20	3.14	3.17	1.08	3.40
25	4.91	4.96	1.69	5.31
30	7.07	7.14	2.43	7.65
32	8.04	8.12	2.76	8.70
40	12.56	12.69	4.32	13.60
45	15.90	16.06	5.47	17.21
50	19.63	19.83	6.75	21.25
60	28.26	28.55	9.72	30.60
65	33.17	33.50	11.41	35.91
75	44.16	44.61	15.19	47.81
80	50.24	50.75	17.28	54.40
90	63.59	64.23	21.87	68.85
100	78.50	79.30	27.00	85.00
110	94.99	95.95	32.67	102.85
120	113.04	114.19	38.88	122.40
125	122.66	123.91	42.19	132.81
150	176.63	178.43	60.75	191.25
200	314.00	317.20	108.00	340.00

Carbon steel, kg/m = width × thickness × 7.85 ÷ 1000. For stainless 304 multiply by 1.010.

Flat bar weight per metre, carbon steel
Width ↓ / Thk → mm	3	5	6	8	10	12	16	20	25	32	40	50
20	0.47	0.79	0.94	1.26	1.57	1.88	2.51	–	–	–	–	–
25	0.59	0.98	1.18	1.57	1.96	2.36	3.14	3.93	–	–	–	–
32	0.75	1.26	1.51	2.01	2.51	3.01	4.02	5.02	6.28	–	–	–
40	0.94	1.57	1.88	2.51	3.14	3.77	5.02	6.28	7.85	10.05	–	–
50	1.18	1.96	2.36	3.14	3.93	4.71	6.28	7.85	9.81	12.56	15.70	–
65	1.53	2.55	3.06	4.08	5.10	6.12	8.16	10.21	12.76	16.33	20.41	25.51
75	1.77	2.94	3.53	4.71	5.89	7.07	9.42	11.78	14.72	18.84	23.55	29.44
80	1.88	3.14	3.77	5.02	6.28	7.54	10.05	12.56	15.70	20.10	25.12	31.40
100	2.36	3.93	4.71	6.28	7.85	9.42	12.56	15.70	19.63	25.12	31.40	39.25
125	2.94	4.91	5.89	7.85	9.81	11.78	15.70	19.63	24.53	31.40	39.25	49.06
150	3.53	5.89	7.07	9.42	11.78	14.13	18.84	23.55	29.44	37.68	47.10	58.88
200	4.71	7.85	9.42	12.56	15.70	18.84	25.12	31.40	39.25	50.24	62.80	78.50

kg/m² = thickness (mm) × density. Sheet/plate weight = kg/m² × area (m²).

Plate and sheet weight
Thickness (mm)	Carbon Steel kg/m²	Stainless 304 kg/m²	Aluminium kg/m²	SS sheet 1250 × 2500 kg / sheet	CS plate 1500 × 6000 kg / plate
0.5	3.93	3.97	1.35	12.4	35.3
0.8	6.28	6.34	2.16	19.8	56.5
1	7.85	7.93	2.70	24.8	70.7
1.2	9.42	9.52	3.24	29.7	84.8
1.5	11.78	11.90	4.05	37.2	106.0
2	15.70	15.86	5.40	49.6	141.3
2.5	19.63	19.83	6.75	62.0	176.6
3	23.55	23.79	8.10	74.3	212.0
4	31.40	31.72	10.80	99.1	282.6
5	39.25	39.65	13.50	123.9	353.3
6	47.10	47.58	16.20	148.7	423.9
8	62.80	63.44	21.60	198.3	565.2
10	78.50	79.30	27.00	247.8	706.5
12	94.20	95.16	32.40	297.4	847.8
14	109.90	111.02	37.80	346.9	989.1
16	125.60	126.88	43.20	396.5	1130.4
20	157.00	158.60	54.00	495.6	1413.0
25	196.25	198.25	67.50	619.5	1766.3
30	235.50	237.90	81.00	743.4	2119.5
32	251.20	253.76	86.40	793.0	2260.8
40	314.00	317.20	108.00	991.3	2826.0
50	392.50	396.50	135.00	1239.1	3532.5
60	471.00	475.80	162.00	1486.9	4239.0
75	588.75	594.75	202.50	1858.6	5298.8
80	628.00	634.40	216.00	1982.5	5652.0
100	785.00	793.00	270.00	2478.1	7065.0

Carbon steel, plain-end, wall thickness per ASME B36.10M / B36.19M. kg/m = 0.02466 × WT × (OD − WT). See the full Pipe Schedule Chart.

Pipe weight per metre, carbon steel
NPS	DN	OD (mm)	Sch 10S kg/m	Sch 40 kg/m	Sch 80 kg/m	Sch 160 kg/m
½"	15	21.3	1.00	1.27	1.62	1.95
¾"	20	26.7	1.28	1.69	2.20	2.90
1"	25	33.4	2.09	2.50	3.24	4.24
1¼"	32	42.2	2.69	3.39	4.47	5.61
1½"	40	48.3	3.11	4.05	5.41	7.25
2"	50	60.3	3.93	5.44	7.48	11.11
2½"	65	73.0	5.26	8.63	11.41	14.91
3"	80	88.9	6.45	11.29	15.27	21.34
4"	100	114.3	8.36	16.07	22.32	33.53
5"	125	141.3	11.57	21.78	30.95	49.10
6"	150	168.3	13.84	28.27	42.57	67.57
8"	200	219.1	19.96	42.54	64.64	111.28
10"	250	273.0	27.78	60.30	95.96	172.25
12"	300	323.8	35.99	79.73	132.02	238.72
14"	350	355.6	41.31	94.51	158.11	281.73
16"	400	406.4	47.30	123.31	203.52	365.36
18"	450	457.0	53.26	155.86	254.52	459.37
20"	500	508.0	68.61	183.40	311.16	564.88
24"	600	610.0	94.53	255.36	442.14	808.24

Formulas

How Weight Is Calculated

Weight = volume × density. With dimensions in mm and density in g/cm³:

Round barkg/m = 0.7854 × D² × ρ ÷ 1000
Hex barkg/m = 0.8660 × A/F² × ρ ÷ 1000
Square barkg/m = A² × ρ ÷ 1000
Flat barkg/m = W × T × ρ ÷ 1000
Pipe / tubekg/m = 3.1416 × WT × (OD − WT) × ρ ÷ 1000
Sheet / platekg = L × W × T × ρ ÷ 1,000,000
Circle / ringkg = 0.7854 × (OD² − ID²) × T × ρ ÷ 1,000,000

All weights are theoretical. Actual weight varies with manufacturing tolerances (e.g. pipe wall up to −12.5%, plate thickness and rolling margins), finish and exact alloy composition. Invoiced weight is the actual weighed weight or as agreed in the order.

Material Density Reference

Material density reference
Material	Density g/cm³	Density kg/m³	Factor × carbon steel weight
Carbon steel / mild steel	7.85	7,850	1.000
Alloy steel (EN8, EN19, EN24, 4140)	7.85	7,850	1.000
Tool steel D2 / D3	7.70	7,700	0.981
Tool steel H11 / H13	7.80	7,800	0.994
Boiler tube SA 210 / T11 / T22	7.85	7,850	1.000
Wear plate NM400 / Hardox	7.85	7,850	1.000
Stainless steel 304 / 304L	7.93	7,930	1.010
Stainless steel 316 / 316L	7.98	7,980	1.017
Stainless steel 310 / 310S	7.90	7,900	1.006
Stainless steel 410 / 420	7.74	7,740	0.986
Stainless steel 430	7.70	7,700	0.981
Duplex 2205	7.80	7,800	0.994
Super Duplex 2507	7.80	7,800	0.994
Inconel 600	8.47	8,470	1.079
Inconel 625	8.44	8,440	1.075
Inconel 718	8.19	8,190	1.043
Monel 400	8.80	8,800	1.121
Monel K-500	8.44	8,440	1.075
Hastelloy C-276	8.89	8,890	1.132
Hastelloy C-22	8.69	8,690	1.107
Titanium Grade 2	4.51	4,510	0.575
Titanium Grade 5 (Ti-6Al-4V)	4.43	4,430	0.564
Copper C11000	8.94	8,940	1.139
Brass C36000	8.50	8,500	1.083
Brass C26000 (70/30)	8.53	8,530	1.087
Aluminium 6061 / 6082	2.70	2,700	0.344
Aluminium 5083	2.66	2,660	0.339
Aluminium 7075	2.81	2,810	0.358
Aluminium bronze AB2	7.60	7,600	0.968
Gunmetal LG2	8.80	8,800	1.121
Cupro-nickel 90/10	8.94	8,940	1.139
Cupro-nickel 70/30	8.94	8,940	1.139
Naval brass C46400	8.41	8,410	1.071
Beryllium copper C17200	8.25	8,250	1.051
Nichrome 80/20	8.40	8,400	1.070
White metal (tin Babbitt)	7.40	7,400	0.943
Zirconium 702	6.51	6,510	0.829
Lead	11.34	11,340	1.445
Nylon (PA6)	1.14	1,140	0.145
PTFE (Teflon)	2.20	2,200	0.280
Polypropylene (PP)	0.91	910	0.116

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