The amount of concrete you need depends on the dimensions of your project. Use our calculator by entering the length, width, and thickness of your slab, wall, or other structure. The calculator will provide the volume of concrete needed in cubic meters or cubic feet.

The standard concrete mix ratio is 1:2:3 (cement:sand:aggregate by volume). This means for every part of cement, you need 2 parts of sand and 3 parts of aggregate. Different applications may require different mix ratios for optimal performance.

A standard 50kg bag of cement yields about 0.035 cubic meters of concrete when mixed with the appropriate amounts of sand and aggregate. To calculate the number of bags, divide your required concrete volume by 0.035. Our calculator does this automatically based on your measurements.

Yes, it's recommended to add 5-10% extra concrete to your calculated volume to account for spillage, settlement, and irregularities in the subgrade. For critical projects, you might want to add up to 15% extra.

Ready-mix concrete is prepared at a plant and delivered to your site in mixing trucks, ensuring consistent quality and saving labor. Site-mixed concrete is prepared on-site by mixing cement, sand, aggregate, and water according to your specifications. This gives you more control but requires more labor and equipment.

Concrete typically takes about 28 days to reach its full strength. However, it reaches about 70% of its strength within 7 days. The concrete should be kept moist during the first 7 days to ensure proper curing. You can typically walk on concrete after 24-48 hours and drive on it after 7 days.