Concrete & Masonry Calculators
Slabs, rebar, block and post holes. Convert dimensions into cubic yards, bars, blocks and cost.
Concrete is unforgiving: ordering short leaves a cold joint, and ordering long means paying for material you cannot use. These calculators convert feet and inches into cubic yards, bags, rebar and block so the order matches the job. Use them for slabs, pads, footings and fence posts.
Concrete Calculator
Calculate how much concrete you need in cubic yards, cubic feet and 60 lb or 80 lb bags. Includes a waste allowance and cost estimate.
Open calculator → Concrete & MasonryRebar Calculator
Calculate rebar quantity for a slab or footing. Enter dimensions, bar spacing and stock length to get bars, linear feet and weight.
Open calculator → Concrete & MasonryConcrete Block Calculator
Estimate 8 × 8 × 16 concrete blocks and mortar bags for a wall. Deduct openings and add waste before ordering.
Open calculator → Concrete & MasonryPost Hole Concrete Calculator
Calculate concrete for fence posts, deck piers and mailbox posts. Enter hole diameter, depth and post count to get bags and cost.
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