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Bundles of TMT bars stacked in the yard, cut ends to camera

Free tool

TMT Bar Weight Calculator

Steel is sold by weight, not by count. Enter the diameter, bar length and quantity to get the nominal weight your invoice will be built on.

Bundles of TMT bars stacked in the yard, cut ends to camera

TMT bar weight

Nominal mass per IS 1786 — weight (kg/m) = d² ÷ 162.

Per metre
Per bar
Total weight

TMT bar weight chart — IS 1786

Reference
Diameterkg per metrekg per 12 m barBars per bundleBundle weight (kg)
6 mm0.2222.6620 bars53.3
8 mm0.3954.7410 bars47.4
10 mm0.6177.407 bars51.8
12 mm0.88810.665 bars53.3
16 mm1.58018.963 bars56.9
20 mm2.47029.642 bars59.3
25 mm3.85046.20Loose
28 mm4.83057.96Loose
32 mm6.31075.72Loose
36 mm7.99095.88Loose
40 mm9.860118.32Loose

Use this to sanity-check any quotation.

Close-up of steel reinforcement bars on a construction site

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