Cement Calculator - Free Online Tool
Professional-grade cement calculator calculator for accurate material estimation. Get instant results with industry-standard formulas and proper wastage allowances.
Calculate Your Cement Calculator Requirements
ft
Length of the concrete area
ft
Width of the concrete area
inches
Thickness of concrete slab
Select appropriate concrete grade
Your Calculation Results
Enter your measurements above to see calculation results here.
Results will update automatically as you type.
How the Cement Calculator Calculation Works
Cement calculation is based on concrete volume and mix ratio. Standard mix ratios are 1:2:3 (cement:sand:aggregate) for general use.
Formula:
Cement = (Volume × Cement Ratio) ÷ Total Ratio × Density FactorFor M20 grade concrete (1:1.5:3 ratio), we calculate material quantities including 2% wastage and compaction factors.
Example Calculation
Real-World Scenario:
Pouring a concrete slab 10 ft × 8 ft × 4 inches thick using M20 grade concrete.
1Calculate volume: 10 × 8 × (4÷12) = 26.67 cubic feet
2Convert to cubic meters: 26.67 ÷ 35.31 = 0.755 cubic meters
3For 1:1.5:3 ratio, cement needed: 0.755 × 403 = 304 kg
4Convert to bags: 304 ÷ 50 = 6.08 bags
Result: 7 bags of cement needed (50kg bags)