Concrete cost estimator
Build a full material list for your pour — concrete, sub-base, and reinforcement — with an itemized total you can download and take to the supplier. Every price is editable.
Slab
Add to the estimate
Edit prices & currency
| Enter slab dimensions to start. |
How this estimate is built
The estimator sizes each material from your slab dimensions: concrete by volume (and auto-picks the cheaper of bags or ready-mix), gravel sub-base by area and depth converted to tons, rebar as a two-way grid, and mesh by sheet coverage. It applies the same verified math as the individual calculators, then prices each line from editable defaults.
Default prices are 2026 US national averages, reviewed 2026-06; sources are listed on the methodology page. They are starting points — local prices vary, so edit them and confirm with a supplier quote before ordering.
Worked example
A 20 × 20 ft slab at 4 inches, on a 4-inch gravel base, with welded-wire mesh. The estimator sizes each material from those dimensions and prices them at the defaults:
| Line item | Quantity | Cost |
|---|---|---|
| Concrete (ready-mix, delivered) | 5.5 yd | $968 |
| Gravel sub-base | 8.1 tons | $326 |
| Wire mesh | 31 sheets | $496 |
| Estimated total | $1,789 |
What makes this different from a plain volume calculator: it rolls every material into one number you can hand to a supplier — and exports the whole list, with the worked math, as a PDF. Need just the concrete? Use the slab calculator; weighing bags against a truck? The bags-vs-ready-mix tool.
FAQ
Does this include labor?
Only if you add it. The estimate covers materials — concrete, sub-base, reinforcement — plus any custom line items you enter (labor, pump truck, forms). Installed/finished concrete typically runs several dollars per square foot on top of materials; add it as an 'Other' line for a fuller budget.
Where do the default prices come from?
They're 2026 US national-average midpoints from published industry sources (see the methodology page), reviewed June 2026. Concrete and aggregate prices vary 30% or more by region, so treat the defaults as a starting point and edit them to your local quotes — every price field is editable.
Can I use this outside the US?
Yes. Switch the currency in 'Edit prices & currency' and replace the default prices with your local rates. The math (volume, weight, quantities) is universal; only the prices and currency symbol are region-specific.