Cement Calculator — Calculate How Much Cement You Need

Cement Calculator

Calculate the exact amount of cement needed for your construction project. Estimate cement bags, cost, and requirements for concrete slabs, footings, and more.

Step 1: Project Dimensions

Understanding Cement Calculations

Cement quantity is calculated based on the volume of concrete needed. Standard concrete mix uses approximately 1 part cement, 2 parts sand, and 3 parts gravel by volume.

Step 2: Cement & Mix Details

10%

About Concrete Mix Ratios

The mix ratio determines the strength and workability of concrete. Standard ratios range from 1:2:3 for general construction to 1:4:8 for mass concrete work. Always add a waste factor for spillage and uneven surfaces.

Cement Calculation Results

Summary
Mix Comparison
Material Breakdown

Cement Required for Your Project

25 Bags
Total Cost: $212.50
Concrete Volume
4.17 yd³
Cement Weight
1,250 lb
Sand Required
2,500 lb
Gravel Required
3,750 lb

Concrete Mix Ratio Comparison

Mix Ratio Cement Required Total Cost Strength Best Use

Material Cost Breakdown

Cement Calculation Formula

Volume (yd³) = (Length × Width × Depth) / Conversion Factor

Cement bags = (Volume × Cement ratio × Density) / Bag weight. Standard concrete density is 150 lb/ft³. The conversion factor accounts for unit conversions (inches to feet, etc.).

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