🧮 Gravel, Sand, and Cement Calculator – Concrete Material Estimator

Easily calculate how much gravel, sand, and cement you need for your concrete volume using standard or custom mix ratios.

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How to Use This Calculator

  1. Enter the volume of concrete you need
  2. Select or input a custom mix ratio
  3. Optionally add wastage percentage and material prices
  4. Click "Calculate" to see your results and chart
  5. Download or print your mix summary for reference
Options
Common Concrete Mix Ratios
Use Case Mix Ratio Strength (MPa)
Foundations 1:3:6 15
Slabs/Pavements 1:2:4 20
Columns/Beams 1:1.5:3 25–30
High-Strength Uses 1:1:2 35+
Tips & Notes
  • • Standard cement bag: 50 kg (approx. 0.035 m³)
  • • Always allow for 5–10% extra material
  • • Ensure water-to-cement ratio is managed separately
  • • Proper mixing = better structural integrity
  • • Typical cement price: $8-$12 per 50kg bag
  • • Typical sand price: $50-$80 per m³
  • • Typical gravel price: $60-$100 per m³