Calculate Weight of Steel rebar from length – 8,10,12,16, 20mm..

Steel rebars are available in various diameters such as 8mm, 10mm, 12mm, 16mm, 20mm, 25mm. In this article, I am going to show you a simple method to calculate the weight of a steel rebar from its length with some examples. End of the article contains the list of commercial available steel bars and its weight.

The calculations given below are valid for all steel rods such as TMT, CMT, mild steel, etc..,

Case 1

If the length of the rebar is in meter and the diameter of rebar is in mm, the weight of the steel rebar W = (D²/162) * L

i.e., Weight of steel reinforcement= (Diameter square/162) * Length

Case 2

If the length of the rebar is in feet and the diameter is in mm, the weight of steel reinforcement W = (D²/533) * L

Examples

Let’s find the weight of TMT steel rod of length 1 meter @ 8mm dia

Weight of 1 meter @ 8mm steel rod = (8²/162) * 1 = 0.395 kg

Weight of 12 meter @ 8mm steel bar = (8²/162) * 12 = 4.74 kg

Weight of 40 feet @ 8mm steel bar = (8²/533) * 12 = 4.80 kg

Weight of 1 meter @ 10mm steel rod = (10²/162) * 1 = 0.617 kg

Weight of 12 meter @ 10mm steel bar = (8²/162) * 12 = 7.407 kg

WEIGHT OF STEEL REBAR FROM LENGTH

Mostly, Steel rebars like TMT are supplied in the length of 12 meters or in 40 feet.

DIAMTER	WEIGHT PER METER	WEIGHT OF 12 METER STEEL REBAR
8mm	0.395 kg	4.740 kg
10mm	0.617 kg	7.407 kg
12mm	0.889 kg	10.667 kg
16mm	1.580 kg	18.962 kg
20mm	2.469 kg	29.630 kg
25mm	3.858 kg	46.296 kg
32mm	6.321 kg	75.852 kg