TMT Bar Weight Chart (8mm, 10mm, 12mm & 16mm)

Proper construction planning starts with correct material data. A reliable TMT Bar weight Chart helps builders and Contractors make informed decisions, from material procurement to final execution. From small residential buildings to large-scale infrastructure projects, the TMT Bar weight Chart plays a necessary role in maintaining construction quality.

Understanding TMT bar weights allows engineers and contractors to manage costs effectively and ensure compliance with design requirements. This comprehensive guide will help you understand standard TMT bar weights, accurately calculate steel requirements, and confidently apply the weight chart at construction sites.

Table of Contents

What is a TMT Bar Weight Chart?

A TMT Bar Weight Chart is a practical guide that shows the weight of TMT steel bars for different diameters, typically defined per meter and per standard bar length. Its primary objective is to help builders, engineers, and contractors determine the correct bar weight for different diameters and ensure proper planning and quality control.

TMT Bar Weight Chart (Diameter-wise)

Section	Weight per Meter (kg)	Weight per 12-Meter Bar (kg)
6mm	0.222 kg	2.66 kg
8mm	0.395 kg	4.74 kg
10mm	0.617 kg	7.40 kg
12mm	0.888 kg	10.66 kg
16mm	1.58 kg	18.96 kg

6mm TMT Bar weight

A 6mm TMT bar is mainly used for secondary support work such as stirrups, rings, ties, and slab distribution bars. It is not typically used for primary load-bearing, but it plays an important role in maintaining structural strength.

The standard weight of a 6mm TMT bar is 0.222 kg per meter, which equals 2.66 kg for a standard 12-meter bar. Due to its smaller diameter, even slight variations in weight can affect overall steel consumption when used in large quantities.

8mm TMT Bar weight

The standard weight of an 8mm TMT bar is 0.395 kg per meter, which comes to 4.74 kg for a standard 12-meter bar. Maintaining the correct weight is important, as underweight bars can increase steel consumption and affect support spacing.

10mm TMT Bar weight

In terms of weight, a 10mm TMT bar weighs 0.617 kg per meter, which comes to 7.40 kg for a standard 12-meter length. The 10mm TMT bar is commonly chosen for slab reinforcement, distribution bars, and light structural members.

12mm TMT bar weight

The standard weight of a 12mm TMT bar is 0.888 kg per meter, which equals 10.66 kg for a standard 12-meter bar. Using bars with the correct weight is essential to maintain structural strength, achieve correct steel estimation, and comply with the layout.

A 12mm TMT bar is mostly used in Construction for slabs, beams, and columns where medium to high strength is required. It is one of the most preferred diameters for residential and commercial buildings due to its balance between load-bearing capacity and ease of handling.

16mm TMT Bar Weight

The standard weight of a 16mm TMT bar is 1.58 kg per meter, which equals 18.96 kg for a standard 12-meter bar. It provides the required strength and stability in columns, beams, and other load-bearing structural members.

A 16mm TMT bar is generally selected for parts of a Building that carry heavy loads, including main columns and load-bearing beams. It is commonly used in Taller buildings and RCC works where strength and stability can’t be compromised.

How to Calculate TMT Bar Weight

TMT bar weight is calculated using a formula based on the bar’s diameter. Since the length of a TMT bar is standard, only the diameter is required to calculate its weight per meter and total weight.

Standard Formula (TMT Bar Weight Formula)

Weight per meter (kg) = D² × 0.006165

Where:

D = Diameter of the TMT bar in millimeters (mm)
0.006165 = Constant derived from the density of steel

This formula is commonly used across the construction industry for estimation and verification.

Step-by-Step Calculation

Take the diameter of the TMT bar (in mm).
Square the diameter (D × D).
Multiply the result by 0.006165 to get the weight per meter.
Multiply the per-meter weight by the total bar length to get the final weight.

In Conclusion

Understanding and using the TMT Bar Weight Chart is important for proper construction planning and reliable structural performance. Knowing the Accurate bar weight helps avoid under-consumption or over-consumption of steel, keeps estimates practical, and contains quality issues that often appear much later.

We hope this article has answered all your questions about the TMT Bar Weight Chart for 6mm to 16mm TMT bars. For any further queries, you can always get in touch with us in the comments below.