Understanding Round Bar Weight Chart (kg, Mm, Pdf): A Key Tool In B2b Market India

A round bar weight chart pdf provides a quick reference for calculating the weight of round bars based on their diameter and length. Typically, these charts use the formula:

Weight (kg/m) = (π/4) × Diameter² (mm) × Density of material (typically 7.85 for steel) × 0.001

However, rather than doing the math manually, a round bar weight chart lists standard diameters alongside their corresponding weights per meter, making life easier for anyone in the trade.

Table of Contents

Round Bar Weight Chart in mm, Kg, Ft

Size in mm	Average Weight
Size in mm	KG/MTR	KG/FT
10	0.62	0.18
12	0.90	0.30
14	1.20	0.40
16	1.60	0.50
18	2.00	0.60
20	2.50	0.80
22	3.00	0.90
24	3.56	1.08
25	3.90	1.20
28	4.80	1.50
30	5.55	1.69
32	6.30	1.90
34	7.14	2.18
36	8.00	2.44
40	9.90	3.00
45	12.49	3.81
50	15.40	4.70
56	19.34	5.89
60	22.20	6.80
63	24.47	7.46
63.5	24.86	7.58
65	26.05	7.94
70	30.20	9.20
73	32.86	10.00
75	34.72	10.58
78	37.51	11.43
80	39.50	12.00
83	42.47	12.95
85	44.55	13.58
90	50.00	15.20
92	52.19	15.91
93	53.39	16.27
95	55.65	16.95
100	61.66	18.79
105	67.98	20.72
110	74.60	22.74
115	81.64	24.88
125	96.34	29.36

Rolling Tolerances

Size	Ovality	Weight	Length
up to 25 mm ± 0.5 mm 25 mm to 35 mm ± 0.6 mm 35 mm to 50 mm ± 0.8 mm 50 mm to 80 mm ± 1 mm 80 mm to 100 mm ± 1.3 mm 100 mm and above ± 1.6 % of the diameter.	± 75 % of total tolerance specified on the size.	10 mm to 16 mm ± 5 % 16 mm and above ± 3 %	For fixed-length : ± 100 mm

Stainless Steel Round bar 303, 304, 316-grade weight chart

Dia	Weight	Dia	Weight
(mm)	per meter (kg)	(in)	per meter (kg)
3mm	0.06	1/8″	0.06
4mm	0.10	3/16″	0.14
5mm	0.16	1/4″	0.25
6mm	0.22	5/16″	0.39
7mm	0.30	3/8″	0.56
8mm	0.40	7/16″	0.77
10mm	0.62	1/2″	1.00
12mm	0.89	9/16″	1.22
14mm	1.22	5/8″	1.56
15mm	1.40	11/16″	1.89
16mm	1.59	3/4″	2.25
18mm	2.01	7/8″	3.07
20mm	2.48	1″	4.03
22mm	3.00
24mm	3.57
25mm	3.88

Round Bar 303S31 Smooth Turned

Dia	Weight	Dia	Weight
(mm)	per metre (kg)	(in)	per metre (kg)
25mm*	3.88	1″	4.03
30mm*	5.58	1 1/8 “	5.07
35mm	7.60	1 1/4 “	6.25
40mm*	9.93	1 3/8″	7.57
45mm	12.56	1 1/2″	9.01
60mm	22.30	1 5/8″	10.60
50mm*	15.50	1 3/4″	12.20
		1 7/8″	14.10
		2″	16.00
		2 1/8″	18.10
		2 1/4″	20.30
		2 3/8″	22.60
		2 1/2	25.00
		2 5/8″	27.60
		2 3/4″	30.30
		3″	36.00

Round Bar 303S31 Rough Turned

Dia	Weight	Dia	Weight
(in)	per metre (kg)	(in)	per metre (kg)
3 1/4″	42.90	4 3/4″	91.70
3 1/2″	49.80	5″	102.00
3 3/4″	57.10	5′ 1/2	123.00
4″	65.00	6″	146.00
4 1/4″	73.40	7″	199.00
4 1/2	82.30

Round Bar 304S31 Bright Drawn IMA

Dia (mm)	Weight per metre (kg)	Dia (in)	Weight per metre (kg)
3mm	0.06	1/8″	0.06
4mm	0.10	3/16″	0.14
5mm	0.16	1/4″	0.25
6mm	0.22	5/16″	0.39
8mm	0.40	3/8″	0.56
10mm	0.62	7/16″	0.77
12mm	0.89	1/2	1.00
15mm	1.40	9/16″	1.27
20mm	2.48	5/8″	1.56
25mm	3.88	11/16″	1.89
		3/4″	2.25
		7/8″	3.07
		1″	4.03

Round Bar 304S31 Smooth Turned IMA

Dia (mm)	Weight per metre (kg)	Dia (in)	Weight per metre (kg)
25mm	3.88	1″	4.03
30mm	5.58	1 1/8″	5.07
40mm	9.93	1 1/4″	6.25
50 mm	15.50	1 3/8″	7.57
60 mm	22.30	1 1/2″	9.01
		1 5/8″	10.60
		1 3/4	12.20
		2″	16.00
		2 1/4″	20.30
		2 1/2	25.00
		2 3/4″	30.30
		3″	36.00

Round Bar304S11/S31 Rough Turned

Dia (in)	Weight per metre (kg)	Dia (in)	Weight per metre (kg)
3″	36.00	6 1/2″	172.00
3 1/4″	42.90	7″	199.00
31/2″	49.80	7 1/2″	229.00
3 3/4″	57.10	8″	260.00
4″	65.00	8 1/2″	294.00
4 1/4″	73.40	9″	329.00
4 1/2″	82.30	10″	406.00
5″	102.00	11″	492.00
5 1/4″	111.98	12″	585.00
5 1/2″	123.00	340mm	728.00
5 3/4″	134.00	16″	1040.00
6″	146.00

Round bar type 316S11/S31 Bright Drawn IMA

Dia (in)	Weight per metre (kg)	Dia (in)	Weight per metre (kg)
3″	36.00	6 1/2″	172.00
3 1/4″	42.90	7″	199.00
31/2″	49.80	7 1/2″	229.00
3 3/4″	57.10	8″	260.00
4″	65.00	8 1/2″	294.00
4 1/4″	73.40	9″	329.00
4 1/2″	82.30	10″	406.00
5″	102.00	11″	492.00
5 1/4″	111.98	12″	585.00
5 1/2″	123.00	340mm	728.00
5 3/4″	134.00	16″	1040.00
6″	146.00

Round Bar 316S11/S31 Smooth Turned Bright Ground IMA

Dia	Weight	Dia	Weight
(mm)	per metre (Kg)	(in)	per metre (Kg)
25mm*	3.91	7/8″	3.09
30mm*	5.63	1″*	4.03
32mm	6.40	1 1/8″*	5.11
35mm*	7.66	11/4″ *	6.30
40mm*	10.00	1 3/8″*	7.63
45mm	12.70	1 1/2″*	9.08
50mm	15.60	1 5/8″*	10.70
60mm*	22.50	1 3/4″*	12.40
		1 7/8*	14.20
		2″*	16.10
		2 1/8″*	18.20
		2 1/4″ *	20.40
		2 3/8″*	22.80
		2 1/2″*	25.20
		2 5/8″	27.80
		2 3/4″*	30.50
		3″*	36.30

Round bar 316S11/S31 Rough Turned

Dia (in)	Weight per metre (kg)	Dia (in)	Weight per metre (kg)
3″	36.30	185mm	217.00
3 1/4″	43.20	7 1/4″	215.00
3 ½”	50.20	7 /12″	230.00
3 3/4″	57.60	8″	262.00
4″	65.50	8 ½”	296.00
4 1/4″	73.90	220mm	307.00
4 1/2″	82.90	9″	332.00
4 3/4″	92.40	9 1/2″	370.00
5″	102.00	10″	409.00
5 1/4″	113.00	10 1/2″	451.00
5 1/2″	123.00	11	495.00
5 3/4″	135.00	12	590.00
6″	147.00	340mm	734.00
6 1/4″	160.00	14	802.00
6 1/2″	173.00	16	1049.00
7″	201.00