How much concrete and how many bags for a slab?
How it works
Enter the slab length, width and depth. The calculator multiplies them to get the concrete volume, then adds 10% extra and works out how many 40 kg bags you need.
How much concrete and how many bags for a slab?
Enter the slab length, width and depth. The calculator multiplies them to get the concrete volume, then adds 10% extra and works out how many 40 kg bags you need.