Rebar Calculator
Calculate steel reinforcement weight and cost from bar schedules.
| Qty | Length (m) | Dia (mm) | Total length | Weight | |
|---|---|---|---|---|---|
| 60.0 m | 53.28 kg |
Total length
60.0 m
Net weight
53.28 kg
With wastage
55.94 kg
Estimated cost
₹3636
Standard rebar weights (D²/162 formula)
| Size | kg/m | kg/6m bar |
|---|---|---|
| T6 | 0.222 | 1.332 |
| T8 | 0.395 | 2.370 |
| T10 | 0.617 | 3.702 |
| T12 | 0.888 | 5.328 |
| T16 | 1.578 | 9.468 |
| T20 | 2.467 | 14.802 |
| T25 | 3.854 | 23.124 |
| T32 | 6.313 | 37.878 |
Rebar quantity and cost estimation
Enter bar schedules with quantity, length, and diameter to calculate total weight and material cost. Add multiple rows for complex reinforcement layouts.
Frequently asked questions
- How is rebar weight calculated?
- Rebar weight (kg) = (D² / 162) × Length, where D is the bar diameter in mm and Length is in metres. This is the standard D²/162 formula.
- What is the standard length of a rebar?
- Standard rebar lengths in India are 6 m, 9 m, and 12 m. The 12 m length is most common for structural work. Bars can be cut to required lengths on site.
- What wastage factor should I use for rebar?
- A 5% wastage factor is standard for straightforward layouts. For complex slabs with many cut-offs, use 8–10%. Columns and footings typically need 3–5%.
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