How the Steel Quantity by Percentage works
Steel weight = Concrete volume × steel % × 7850 kg/m³.
How to use this calculator
- Sign up free and verify your email to unlock the calculator.
- Choose Metric (m, mm, m³, kg) or Imperial (ft, in, cft, lb) units.
- Enter the concrete volume, steel.
- Results update instantly — read the quantities in the Results panel.
- Add a wastage allowance and confirm against your drawings and specifications before ordering.
Typical uses
Early-stage steel budget from concrete quantity.
Assumptions & limitations
Results are planning estimates based on standard assumptions for steel & rebar work. They do not replace structural design, site measurement or project specifications. Material densities, wastage and mix proportions vary by region and supplier.
Frequently asked questions
- How does the Steel Quantity by Percentage work?
- Steel weight = Concrete volume × steel % × 7850 kg/m³.
- Can I use the Steel Quantity by Percentage in feet and inches?
- Yes. Switch to Imperial and enter feet, inches, square feet or pounds — the calculator converts automatically and shows results in imperial units.
- When should I use the Steel Quantity by Percentage?
- Early-stage steel budget from concrete quantity.
- Is this construction calculator free?
- Yes. All CM PRO construction calculators are free — you only need to sign up and verify your email.
Related searches: steel quantity by percentage, steel in concrete kg per m3, reinforcement estimate.
