Tool-first calculator
Concrete calculator: bags, trucks, and broad cost.
Enter slab dimensions to estimate concrete volume, bag count, ready-mix truck loads, and broad material cost. The calculator uses editable assumptions because final pricing varies by mix design, waste, short-load fees, access, reinforcement, finish, permits, and local supplier pricing.
Independent FatBook v3 cost indexReviewed by Leonard "Chuck" Thompson
Concrete needed
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How to use this result
- Bags are usually practical for patch work, posts, small pads, and tight-access jobs.
- Ready-mix trucks usually make sense as volume rises, but local minimum loads and delivery fees matter.
- This is material math only. It does not include excavation, forms, rebar, mesh, base prep, pumping, finishing, demolition, permits, or contractor overhead.
Cost-index version: 2026.Q2. Read the FatBook methodology, or use the bid and true cost calculators for installed outdoor living and hardscape bid checks.
Data Sources Used On This Page
- Independent FatBook v3 cost index for concrete calculator.
- BLS OEWS wage inputs and FRED PPI material inflation references.
- Craftsman labor-hour references and contractor overhead benchmarks.
- Permit assumptions are included only where verified permit/source data is available.
Cost-index version: 2026.Q2
Updated: May 2026
Sources: BLS, Craftsman, FRED
Reviewed by: Leonard "Chuck" Thompson
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Cost index built by David Olson, Founder of TheFatBook · Methodology reviewed by Leonard "Chuck" Thompson, LC Thompson Construction Co. · 2026.Q1