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Concrete Mix

Calculate concrete components for slabs and foundations

Structural Materials

🏗️ Calculate Concrete Mix

Structure Type

Area (m²) *

Thickness (mm) *

Perimeter (m) *

Foundation Width (m) *

Foundation Height (m) *

Concrete Grade

The concrete calculator uses the following formula:

For Slab: Volume = Area × (Thickness / 1000) m³

For Foundation: Volume = Perimeter × Width × Height m³

Dry Volume = Volume × 1.15 (shrinkage factor)

Cement = Dry Volume × (1 / Total Ratio) × Cement Density

Sand = Dry Volume × (Sand Ratio / Total Ratio) × Sand Density

Gravel = Dry Volume × (Gravel Ratio / Total Ratio) × Gravel Density

Water = Cement Mass × 0.5 (W/C ratio)

Standard Grades: M100 (1:3:5), M150 (1:2.5:4), M200 (1:2:4), M250 (1:1.5:3)

Shrinkage Factor: We use 1.15 to account for air voids and compaction during mixing.