All calculators
Twelve calculators and a quote checker. Each card shows the example from its own page. A 20x20 slab, 4 inches thick, runs $2,874 – $4,789 installed at national prices. Put your ZIP into any of them and it switches to your local labor rates.
New concrete and paving
- Concrete slab calculator20x20: $2,874 – $4,789
- Concrete driveway calculator40x16: $6,234 – $10,390
- Concrete patio calculator12x16: $1,601 – $2,668
- Slab foundation calculator30x40: $17,216 – $28,693
- Shed slab calculator10x12: $1,074 – $1,790
- Garage slab calculator24x24: $6,631 – $11,051
- Asphalt driveway calculator40x16: $3,106 – $5,177
- Slab reinforcement calculator20x20 rebar: $766 – $1,276
Repairs, floors and coatings
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Every figure on this page is worked out at national prices, so a contractor's bid for your job will differ. Prices updated September 2026; see how we compute them.