Concrete Calculator
How to work out how much concrete you need
- Choose a slab or footing, or a round column, and metres or feet.
- Enter the dimensions and how many you need.
- Keep 10% extra for waste or change it, and read the volume and number of bags.
Frequently asked questions
How many bags make a cubic yard?
About 45 bags of 80 lb or 60 bags of 60 lb. An 80 lb bag makes about 0.6 ft³ of concrete.
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