Construction & Building CalcyZone Calculator
Steel Rebar Weight & Quantity Calculator
Calculate steel rebar weight per meter (d^2/162), total weight in kg/tons, and 12m rod counts.
Unit Standard:
Waste Factor:5%
Currency:
Project Inputs
Live Estimation Summary
Visual Schematic (rebar)
Estimated Material & Direct Cost₹2,888.89
Material Quantities & BOQ Breakdown
| Item Material | Calculated Quantity | Standard Unit | Est. Unit Price | Subtotal (INR) |
|---|---|---|---|---|
| Steel Rebar (12mm) | 44.4 kg (0.044 Tons) | kg | ₹2,888.89 |
Engineering Disclaimer: CalcyZone construction estimations are provided for planning, budgeting, and educational purposes. Material specifications, load calculations, and structural designs must be reviewed by a licensed civil or structural engineer prior to construction.
Mathematical Formula
Weight per Meter (kg) = Diameter² / 162
Overview & Explanation
Calculates unit weight (kg/m) and total tonnage of TMT steel rebar reinforcement bars using standard engineering formulas.
How It Works
- Uses d^2 / 162 (or d^2 / 533 for feet) to find nominal weight per unit length.
- Multiplies unit weight by total length and bar quantity.
Practical Applications
- Column & beam reinforcement detailing
- Slab rebar estimation
- Structural steel ordering
Worked Example: 50 Rods of 12mm Rebar (12m each)
Calculate total steel weight.
1
Unit Weight Formula
12² / 162
= 0.888 kg/m
2
Total Weight
0.888 × 12 × 50
= 533.3 kg (0.533 Tons)
Frequently Asked Questions
What is the d^2 / 162 formula for steel weight?
The formula W = d^2 / 162 calculates the weight of 1 meter of steel bar in kilograms, where d is the bar diameter in millimeters.
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