Concrete Calculator
Calculate concrete volume needed for slabs, columns, footings, and other shapes. Estimate bags and ready-mix yards required.
Visualization
Concrete Volume Needed
1.23 cubic yards
33.33 cubic feet / 0.94 m³
40 lb Bags
112
60 lb Bags
75
80 lb Bags
56
Estimated Costs
Ready-Mix
Recommended
Prices are estimates and vary by location
Thickness Guide
Concrete Basics
Concrete is a mixture of cement, water, sand, and gravel. The ratio of these ingredients affects strength and workability. Standard mix is about 1:2:3 (cement:sand:gravel).
Mixing Concrete
Mix concrete in a wheelbarrow or mixer. Add water gradually until reaching a thick, workable consistency. Over-watering weakens the final product.
Proper Curing
Concrete gains strength over time through curing. Keep it moist for at least 7 days. Full strength is reached at 28 days. Avoid freezing temperatures during curing.