A 12mm TMT bar typically weighs 0.888 kilograms per meter. This weight is based on the standard formula used in the construction industry to calculate the weight of TMT (Thermo Mechanically Treated) bars. The formula is:
Weight per meter (kg) = (D² × 162) / 162,
where D is the diameter of the bar in millimeters.
So, for a 12mm bar:
(12 × 12 × 1) / 162 = 0.888 kg/m
TMT bars are usually available in standard lengths of 12 meters, so a single 12mm bar of 12 meters length weighs approximately:
0.888 × 12 = 10.656 kg
This means that one 12-meter 12mm TMT rod weighs around 10.65 kg. If you’re purchasing steel by weight, this calculation helps estimate how many bars you will receive per ton.
Here’s a quick reference:
- 1 bar of 12mm TMT (12 meters) = 10.65 kg
- 1 ton (1000 kg) of 12mm TMT bars = around 94 bars
Knowing the weight of a TMT bar is important for estimating construction material costs, transportation planning, and overall structural design. Engineers, builders, and contractors rely on such standard calculations to plan accurately and ensure safety and efficiency at every stage of a project.
If you’re planning to buy TMT bars, always check with the manufacturer or supplier for any variations in length, density, or specifications, as some brands may have slight deviations. For the most accurate pricing, you can visit platforms like TMTPriceToday.com for daily steel rates and weight charts.
