/// Answer-first planning notes
What material subtotal follows from my concrete slab quantity?
| Planning input | Calculation role | Check before ordering |
|---|---|---|
| Slab dimensions | Produce net and adjusted concrete volume | Measure the formed space |
| Bag or yard order unit | Select the purchasable quantity | Match the actual supplier product |
| Local unit price | Produces an optional material subtotal | Exclude labor, tax, delivery, and minimums |
When the 80 lb package option is selected, its bag count is scoped to the published QUIKRETE No. 1101 yield of approximately 0.60 ft³.
Evidence: The QUIKRETE Companies, LLC/// Formula & field notes
How this slab cost estimate works
FormulaMaterial cost = waste-adjusted order quantity × your local unit price. The selected price unit must match bags or cubic yards.
Worked example
If a slab requires 3.50 yd³ after waste and your delivered material price is $185 per yd³, the concrete-only subtotal is $647.50 before fees and tax.
/// Source trail
Data & assumptions
Every source has a declared scope. A reference can support a conversion or product assumption without turning this estimate into a supplier quote.
Exact international-foot to meter conversion; U.S. survey-foot conversion is explicitly outside this claim.
Independent confirmation that one international foot equals exactly 0.3048 meters; U.S. survey-foot conversion remains distinct.
Approximate 0.3 ft³ yield for the 40 lb QUIKRETE Concrete Mix No. 1101-40 package only; not a generic bag-yield assumption.
The QUIKRETE Companies, LLC · Primary evidenceQUIKRETE Concrete Mix No. 1101-50 product yieldApproximate 0.375 ft³ yield for the 50 lb QUIKRETE Concrete Mix No. 1101-50 package only; not a generic bag-yield assumption.
The QUIKRETE Companies, LLC · Primary evidenceQUIKRETE Concrete Mix No. 1101-60 product yieldApproximate 0.45 ft³ yield for the 60 lb QUIKRETE Concrete Mix No. 1101-60 package only; not a generic bag-yield assumption.
The QUIKRETE Companies, LLC · Primary evidenceQUIKRETE Concrete Mix No. 1101-80 product yieldApproximate 0.6 ft³ yield for the 80 lb QUIKRETE Concrete Mix No. 1101-80 package only; not a generic bag-yield assumption.
/// Common questions
Slab Cost calculator FAQ
Where does the concrete price come from?
From you. Enter a current local supplier quote per bag or cubic yard. V1 has no live price feed and does not scrape retailer pages.
What is included in the subtotal?
Only the calculated concrete quantity multiplied by your entered price. Labor, excavation, forms, reinforcement, base, finishing, permits, delivery add-ons, tax, and pump service are excluded.
Why not use one U.S. average price?
Concrete pricing is local and changes with mix, quantity, distance, energy costs, season, and service fees. A dated national figure can be useful context but should never be presented as your quote.