Concrete Mix Calculator
Use this Concrete Mix Calculator to calculate the exact cement, sand, aggregate and water quantities for any concrete mix (M5 to M40).
Input Parameters
Typically measured in inches or centimeters for slabs
Typical range: 0.4-0.6 for general purpose concrete
M5 (1:5:10)
M7.5 (1:4:8)
M10 (1:3:6)
M15 (1:2:4)
M20 (1:1.5:3)
M25 (1:1:2)
M30 (1:0.75:1.5)
M35 (1:0.5:1)
M40 (1:0.25:0.5)
Calculation Results
Cement Concrete Volume:
0.00 m³
Wet Volume of Mix:
0.00 m³
Cement Required:
0.00 m³
Cement Bags:
0 bags
Sand Required:
0.00 m³
Sand Weight:
0.00 kg
Gravel (Aggregate) Required:
0.00 m³
Gravel Weight:
0.00 kg
Water Required:
0.00 L
How to Use Concrete Mix Calculator?
- Enter dimensions of your concrete structure (length, width, height)
- Choose a preset mix ratio or enter custom ratios for cement, sand, and aggregate
- Adjust water-cement ratio (typically between 0.4 and 0.6 for general concrete)
- Adjust quantity if you need multiple structures
- Click “Calculate” to get the exact amount of materials needed
- Use the “Clear” button to reset all fields
Calculation Formulas Used:
Cement Concrete Volume = Length × Width × Height
Wet Volume of Mix = Cement Concrete Volume × 1.524
Cement Required = (Cement Ratio / Total Ratio) × Wet Volume of Mix
Cement Bags = Cement Required / 0.035
Sand Required = (Sand Ratio / Total Ratio) × Wet Volume of Mix
Sand Weight = Sand Required × 1550
Gravel Required = (Aggregate Ratio / Total Ratio) × Wet Volume of Mix
Gravel Weight = Gravel Required × 1350
Water Required = Cement Required × Water-Cement RatioNote: For higher strength grades (M30 and above), these ratios are approximate. For critical applications, consult a structural engineer for precise mix design. The term “aggregate” refers to gravel or crushed stone used in concrete.