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TMT Bar Weight Chart (All Brands)

All major TMT brands in India make bars to IS 1786, so a 12 mm Tata Tiscon, JSW Neosteel or SAIL bar has the same nominal weight: 0.888 kg per meter, or about 10.66 kg for a 12 m bar. One chart works for every brand.

TMT Bar Weight Chart (All Brands, IS 1786)

Size	kg per m	Per 12 m bar	Bars per tonne
6 mm	0.222	2.66	375
8 mm	0.395	4.74	211
10 mm	0.617	7.40	135
12 mm	0.888	10.66	94
16 mm	1.580	18.96	53
20 mm	2.470	29.64	34
25 mm	3.850	46.20	22
28 mm	4.830	57.96	17
32 mm	6.310	75.72	13
36 mm	7.990	95.88	10
40 mm	9.860	118.32	8

This chart applies to Fe 415, Fe 500, Fe 500D, Fe 550 and Fe 600 grades; the grade changes the strength, not the weight.

Brands This Chart Covers

Tata Tiscon
JSW Neosteel
SAIL TMT
Jindal Panther
Vizag Steel (RINL)
Kamdhenu
Shyam Steel
Kamachi
Radha TMT
SRMB

Brand names are used only to show that their bars follow IS 1786 nominal weights. We are not linked to any brand. Check the brand's own catalogue for bundle sizes and actual lengths.

TMT Bar Weight Formula

Weight (kg/m) = D² ÷ 162

Use the sariya weight calculator or the rod weight calculator for any length and quantity.

Why Actual Weight Can Differ

Steel is rolled to a size range, not an exact size, so the weight on the weighbridge is rarely exactly the calculated weight.

TMT bars (IS 1786): the mass per meter may vary by about ±7% for bars up to 10 mm, ±5% for 12–16 mm and ±3% for bars above 16 mm.
Plates and sheets (IS 1852 / IS 2062): thickness has a rolling tolerance, so a "10 mm" plate can be slightly thicker or thinner.
Pipes and sections: corner radius, weld seam, zinc coating and end finish (plain or screwed) change the weight a little.

Use the calculated (nominal) weight for estimates and quotations, and the actual weighbridge weight for billing.

Frequently Asked Questions

Is Tata Tiscon weight different from other brands?

No. Tata Tiscon, JSW, SAIL and other IS 1786 brands have the same nominal weight per meter. For example, 12 mm is 0.888 kg/m for all of them.

What is the weight of a 12 mm TMT bar of 12 m?

About 10.66 kg (0.888 kg/m × 12 m).

What is the weight of an 8 mm TMT bar of 12 m?

About 4.74 kg (0.395 kg/m × 12 m).

Does Fe 500D weigh more than Fe 500?

No. The grade changes strength and ductility, not the size, so the weight per meter is the same.

Why does my TMT bar weigh less than the chart?

IS 1786 allows a small mass tolerance (about ±3–7% depending on size). Bars rolled at the lower end of the tolerance weigh slightly less.

TMT Bar Weight Chart (All Brands)