Rebar Material Calculator
Calculate how much rebar you need for your construction project with our comprehensive calculator. Determine bar requirements, weight, length, and costs for concrete reinforcement.
Step 1: Project Specifications
Standard Rebar Spacing
Typical rebar spacing ranges from 15-30 cm for slabs and foundations. Closer spacing provides greater reinforcement but increases material costs.
Step 2: Rebar Parameters
About Rebar Weight Calculation
Rebar weight is calculated using standard steel density (7850 kg/m³). The formula is: Weight = (Diameter²/162) × Length. Waste factor accounts for cutting losses and on-site waste.
Rebar Requirements Results
Total Rebar Required
Rebar Diameter Comparison
| Rebar Size | Diameter (mm) | Weight per m (kg) | Total Weight |
|---|
Rebar Distribution Breakdown
Rebar Calculation Formula
Number of Bars = (Length / Spacing) + (Width / Spacing) × 2
To calculate rebar requirements: Calculate bars needed in both directions, multiply by length, then apply weight formula: Weight = (Diameter²/162) × Total Length.
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