Concrete Calculator

A standard 80-pound bag of concrete mix yields exactly 0.6 cubic feet of mixed concrete. That means you will need about 45 bags of 80 lb concrete to pour one full cubic yard.

For basic residential walkways, patios, and play areas, 4 inches (10 cm) is the industry standard. For driveways or equipment pads carrying heavier vehicles, a thickness of 6 inches (15 cm) is recommended to prevent cracking.

Uneven ground bases, spillage, and errors during pouring always happen. Adding a standard 10% waste factor guarantees you will not run short of concrete mid-pour, which is difficult and expensive to patch later.

For smaller projects under 1 cubic yard (about 45 bags of 80 lb mix), mixing it yourself is the most budget-friendly choice. For larger jobs, hiring a ready-mix truck saves massive amounts of physical labor and guarantees a consistent blend.

You can walk on fresh concrete after 24 to 48 hours. However, you should wait at least 7 days before driving passenger vehicles on it, and a full 28 days for the concrete to reach its maximum structural strength.