Buying TMT bars is not just about comparing prices. The right size, grade, quality and application all matter when planning a construction project.

The 8mm TMT bar is widely used for various reinforcement applications, including stirrups, ring ties, slabs and light structural work. However, understanding its specifications and choosing the appropriate grade is important before making a purchase.

In this guide, we explore 8mm TMT bar price, common uses, available grades, specifications and important buying factors for 2026.

8mm TMT bar price, uses, grades and buying guide 2026

What Is an 8mm TMT Bar?
TMT stands for Thermo-Mechanically Treated. A TMT bar is a ribbed reinforcement bar used in reinforced concrete. The “8mm” refers to its nominal diameter.

TMT bars have a hard outer surface and a softer, ductile core, which helps them handle both load and structural movement. The ribs on the surface improve bonding with concrete.

The 8mm bar is one of the thinner standard sizes. It is mainly used for secondary reinforcement such as stirrups and distribution bars, not as the main load-bearing steel in heavy structures.

What is an 8mm TMT bar and its uses in concrete reinforcement

8mm TMT Bar Weight Per Meter
The weight of an 8mm TMT bar is approximately 0.395 kg per meter, or about 0.12 kg per foot.

This comes from the standard formula for steel bars (see the calculation section below). A standard 12-meter bar weighs about 4.74 kg, and a bundle of 10 such bars weighs about 47.4 kg.

Actual weight can vary slightly because IS 1786 permits a tolerance on nominal mass. Always confirm the weight with your supplier’s test and billing documents.

8mm TMT bar weight per meter and size specification

8mm TMT Bar Weight Chart
Bar Length

Approx. Weight (kg)

1 meter

0.395

6 meters

2.37

9 meters

3.56

12 meters

4.74

The 12-meter length is the most common in the market. Other lengths may be available depending on the manufacturer and order.

How to Calculate 8mm TMT Bar Weight?
The commonly used formula is:

Weight per meter (kg) = D² ÷ 162

where D is the bar diameter in mm.

For an 8mm bar:

D² = 8 × 8 = 64
64 ÷ 162 = 0.395 kg per meter
To find the weight of a full bar, multiply by its length:

0.395 × 12 m = 4.74 kg for a 12-meter bar
For any custom length, use Weight (kg) = D² × L ÷ 162, where L is the length in meters. This formula gives a theoretical weight. Actual bars may differ within the tolerance allowed by the standard.

How Many 8mm TMT Bars Are There in One Ton?
One ton is 1,000 kg. Dividing by the weight of one bar gives the approximate count:

Bar Length

Approx. Bars per Ton

12 meters (4.74 kg)

about 211 bars

9 meters (3.56 kg)

about 281 bars

6 meters (2.37 kg)

about 422 bars

One ton of 8mm TMT bars contains roughly 2,532 meters of steel (1,000 ÷ 0.395).

These are theoretical figures. The actual count depends on real bar weight and tolerance.

8mm TMT Bar Size and Dimensions
Specification

Detail

Nominal diameter

8 mm

Approx. cross-sectional area

50.3 mm²

Approx. weight per meter

0.395 kg

Standard bar length

12 m (commonly)

Bars per bundle

10

Surface

Ribbed / deformed

Applicable standard

IS 1786

IS 1786 is the Indian Standard for high-strength deformed steel bars and wires used for concrete reinforcement. Bar size, mass and mechanical properties should align with this standard.

8mm TMT bar size, dimensions and IS 1786 specifications

SSI TMT 8mm specification (12.2 m piece):
Size

Std. Wt. (kg/m)

Piece Wt. (12.2 m)

Bundle Wt.

Pieces in Bundle

8 mm

0.37 – 0.39

4.514 – 4.758 kg

45.14 – 47.58 kg

10

SSI TMT Bars are manufactured as per IS 1786 with controlled weight tolerance. This table uses 12.2 m pieces, so figures differ slightly from the 12 m values above.

Rebar Yard Measurement Demonstration

8mm TMT Bar Price in India (2026)
TMT bar prices in India change often. They are usually quoted per kg or per ton and vary by city, brand, grade and market conditions. For this reason, a fixed price is unreliable. Always ask for a current quotation.

As an indicative guide, 2026 market rates have mostly been around ₹60–₹72 per kg (roughly ₹60,000–₹72,000 per ton). Premium brands typically price higher than secondary mills, and smaller sizes like 8mm may carry a slight premium over larger sizes.

You can estimate cost with this formula:

Cost = Weight × Rate per kg

Here is an illustration for one 12-meter bar (4.74 kg) at different rates. These are indicative rates only, not live market prices:

Rate (₹/kg)

Cost of One 12 m Bar (approx.)

Cost of 1 Ton

₹60

₹284

₹60,000

₹65

₹308

₹65,000

₹70

₹332

₹70,000

₹72

₹341

₹72,000

For bulk orders, multiply by the number of bars or work from the total weight in tons.

8mm TMT bar price per kg and per ton in India 2026

Factors Affecting 8mm TMT Bar Price
Several factors influence the price you are quoted:

Raw material cost: Iron ore, scrap, sponge iron and billet prices.
Grade: Higher grades such as Fe 550D may be priced differently from Fe 500.
Brand and manufacturing quality: Process control and testing affect pricing.
Order quantity: Bulk orders may attract better rates.
Location and transport: Freight and local demand affect the final rate.
GST: TMT bars fall under bars and rods of iron or non-alloy steel, and 18% GST is added to the base price. For details,
read our TMT Bar HSN Code guide

Market demand: Demand usually rises in the post-monsoon construction season (October to March), which can push