12mm rod weight: Everything You Should Know

by ARS Steel
POSTED ON
Dec 11, 2023
TMT bars

TMT bars stand as the most important structural element in any form of house construction. Whether it's your cozy home or a towering commercial edifice in the making, TMT bars play an irreplaceable role.

As you progress on the research for the best TMT bars, your choice revolves around diameter specifications. While length typically adheres to a universal standard, diameters offer a varied set of options. The TMT bars come in diameters of 8 mm, 10 mm, 12 mm, 16 mm, 20 mm, and 32 mm, allowing you to select in alignment with your construction demands.

Determining the right quantity of TMT bars hinges on your project's unique prerequisites. Calculating the weight of the bars is a pivotal consideration, and for your ease, we furnish you with a TMT bar weight chart.

What is weight of 12 mm steel rod?


Here's what our guide entails:

  1. Weight Chart
  2. Individual TMT Bar Specifications
  3. Formula for Calculating TMT Bar Weight

Let's delve into a specific example: a 12 mm TMT bar adheres to these quality and utility criteria:

Now, let's explore the formula to gauge the weight of TMT bars. When you procure TMT bars, they often come bundled with similar weights to maintain consistency, following the IS:1786-2008 standard.

TMT Steel Bar Weight Chart


SIZE WEIGHT (Kgs/metre) as per ISI
MM MIN NOMINAL MAX
8 mm 0.367 0.395 0.423
10 mm 0.574 0.617 0.66
12 mm 0.844 0.888 0.932
16 mm 1.501 1.58 1.659

The formula to calculate the 12 mm steel rod weight in mass i.e., kilograms for each square meter is as follows:

Mass = D x D/162

Let's put this formula into action. Suppose you require TMT bars with a 12 mm diameter. The 12 mm rod weight would be = 12 x 12 / 162 = 0.888 kg per bar per square meter.

If you seek the total weight, the formula is D x D x L / 162, where D signifies the diameter and L (typically 12) is the length.

Let's compute the 12 mm rod weight.

The 12 mm steel rod weight W = 12 x 12 x 12 / 162 = 10.66 kg.

According to the IS standard, a tolerance of + or – 7% is considered acceptable. You can employ this formula for calculating the weight of bars of various diameters.