Steel Weight Calculator
Calculate TMT bar weight using D²/162 formula.
Enter diameter & length
About Reinforcement Calculator
The Reinforcement Calculator is a critical tool for civil engineers and site supervisors to calculate the weight of TMT steel bars. Using the standard unit weight formula (D²/162), it accurately converts total running length of steel into kilograms and tons.
How to Use This Tool
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Input Length
Enter the length of a single bar and the total number of bars.
Get Weight
Instantly see unit weight (kg/m) and total weight in Kg and Tons.
Frequently Asked Questions
What is the formula used?
The weight of a steel bar is calculated as (Diameter² / 162) per meter length. For example, 8mm bar is (8*8)/162 = 0.395 kg/m.
What is standard bar length?
In India and many other regions, purchasing TMT bars from the factory usually comes in standard 12-meter (approx 40 feet) lengths.
Key Features
- •Standard D²/162 Formula
- •Supports 8mm to 32mm Bars
- •Unit Weight Calculation
- •Total Ton/Kg Estimation
- •Standard 12m Bar Counter