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There's no hidden formula. We multiply your wall's length, height and thickness to get its volume in cubic metres, then multiply that by a typical local price per cubic metre. That price already rolls materials and labour into one figure, so you get a single number instead of a pile of line items.
One thing to watch: you enter thickness in centimetres, so behind the scenes we turn it into metres first. A 20 cm wall counts as 0.2 m in the maths.
A quick example
Say you're building a wall 5 m long, 2.5 m high and 20 cm thick in the United States. That's 5 × 2.5 × 0.2 = 2.5 m³ of concrete. At the mid-range price of $270 per m³, you're looking at about $675, and somewhere between $550 and $850 depending on how cheap or pricey your local market is.
Two walls with identical dimensions can end up costing very different amounts. These are the things that usually make the difference.
The estimate covers the wall itself. It doesn't cover everything around it, and that's where budgets tend to get surprised.
If your project needs any of the items on the right, ask for them to be priced separately. Foundations in particular can add a lot.
It depends on what the wall does. As a rough guide, garden and boundary walls are often 10 to 20 cm thick, while basement and retaining walls usually start around 20 cm and go up from there. If the wall holds back soil or carries part of a building, get an engineer to size it. Guessing here isn't worth the risk.
A typical wall might use somewhere around 50 to 100 kg of reinforcing steel per cubic metre, and heavily loaded walls use more. The exact amount comes from the engineer's drawings, so treat this as a ballpark for budgeting rather than a spec.
Not always. For small, non-structural walls, blockwork is often cheaper because you skip the formwork. Poured concrete tends to win on strength, speed on larger jobs, and resistance to water, which is why it's popular for basements and retaining walls. Ask for a price on both if either would work for you.
Yes, a little. Most people add 5 to 10 percent to cover spillage, uneven ground and slightly overfilled formwork. Running short halfway through a pour is a much bigger headache than having a bit left over.
Mostly labour costs, the price of cement, aggregate and steel, how far materials have to travel, and local building rules. Currency also plays a part, which is why the numbers in the table look so different at first glance.
Good enough to plan with, not good enough to sign a contract on. Real quotes can land above or below the range shown, especially for awkward sites. Use the estimate to get your budget in the right ballpark, then collect two or three quotes.
The prices in this calculator are rounded planning ranges, not live market data, and they aren't updated day by day. They're here to help you get a feel for the cost before you start phoning contractors.
Also, the comparison table shows each country in its own currency, so please don't compare across rows. 800 in one currency isn't the same as 800 in another.
When you do ask for a real quote, request the price broken down into concrete, steel, formwork and labour. It makes offers much easier to compare.
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