Reinforcement Steel Weight Calculator

This Reinforcement steel weight calculator helps you calculate the weight of reinforcement bars (TMT steel) accurately using diameter and length. Whether you’re a site engineer, quantity surveyor, contractor, or student, this tool simplifies your steel estimation process.

The calculator supports both metric and imperial units:

Steel Weight Calculator

Input Details

Diameter Unit: Diameter: Length Unit: Length:

Result will appear here…

Formula Used

The steel weight is calculated using the standard formula:

Weight (kg) = (D² × L) / 162

Where:

D = diameter of the bar in millimeters (mm)
L = length of the bar in meters (m)

If the length is given in feet, it will be converted to meters using:

L (m) = L (ft) × 0.3048

✅ How to Use:

Select the diameter unit – millimeter or inch
Enter the diameter of the steel bar
Select the length unit – meter, foot, or millimeter
Enter the length of the bar
Click the Calculate button to get the steel weight in kilograms

The tool will also show you the weight of a standard 12-meter bar of the same diameter in both meters and feet.

✅ Why Use This Tool:

Saves time and eliminates manual errors
Useful for preparing bar bending schedules (BBS)
Helps in checking steel quantities for procurement
Good for BOQ preparation, estimation, and billing

✅ Standard Steel Bar Diameters (Dia in mm) used in construction

6 mm
8 mm
10 mm
12 mm
16 mm
20 mm
25 mm
28 mm
32 mm
36 mm
40 mm