Concrete Calculator
Cement, sand, crush, water and steel for slabs, beams, columns and footings. Nominal mixes 1:1.5:3, 1:2:4, 1:3:6 and 1:4:8 at today's prices.
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About this calculator
Calculate the materials for any concrete pour — a roof slab, footing, beam or column — from its size or volume. Pick the mix and reinforcement type to include steel and the full cost.
How it's calculated
- Dry volume = wet volume × 1.54
- Cement bags = dry volume × 1 ÷ (sum of ratio) ÷ 1.25
- Sand / crush = dry volume × their share of the ratio
- Water = cement (kg) × water–cement ratio
- Steel ≈ volume (m³) × kg/m³ for the member type
How many bags of cement in 1 m³ of 1:2:4 concrete?
About 6.2 bags (50 kg), with 15.5 cft sand and 31 cft crush.
How much steel for a slab?
Typically 80–100 kg per m³ of slab concrete; the drawings give the exact figure.
Results are calculated from the values you enter using standard formulas. Download the PDF to keep a record. For certified testing, design or construction, talk to our engineers.
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Testing, design and construction across Azad Kashmir & Punjab. Call or WhatsApp us.