Concrete calculators
Work out how much concrete to order for a slab, a strip footing or round post-hole columns, then compare ready-mix with bagged premix. Results round ready-mix up to the nearest quarter yard (or quarter cubic metre), count bags for each common size, and estimate cost with prices you can edit.
Choose a calculator (3)
Related guides
- How Thick Should a Concrete Patio Slab Be?The standard concrete patio is 4 inches thick on a 4-inch gravel base. When to go to 5 or 6 inches, plus reinforcement, joints and how much concrete to order.
- Pavers vs Concrete Patio: Cost ComparisonCompare the cost of a paver patio and a poured concrete patio, installed and DIY, with a worked 12 x 16 ft example, upkeep and repair costs, and how to choose.