Slab Rebar & Yardage Estimator

ConcreteCalc is the fast, no-nonsense estimating calculator built for concrete contractors and pros who need an answer on the jobsite — not a spreadsheet. Pick a pour, punch in your dimensions, and instantly see the volume, the number of pre-mix bags, the ready-mix truckloads, and the estimated cost. No ads. No sign-up. No internet required. CALCULATORS FOR EVERY COMMON POUR • Slab / Floor — rectangle, circle, or by total area • Footing — strip & spread footings, with quantity • Wall — foundation & retaining walls • Round Column — sonotubes, piers & posts • Stairs — poured concrete steps • Curb & Gutter — curb with gutter flag • Post Holes — deck, fence & sign posts • Gravel / Base — sub-base & backfill, in yards and tons • Rebar Grid — two-way mat: total feet, bar count & stock lengths EVERYTHING YOU NEED TO ORDER • Volume in cubic yards or cubic meters • Pre-mix bags for 40, 60 & 80 lb (or 20, 25 & 40 kg) — all shown at once • Ready-mix truckloads, based on your truck size • Estimated cost using your price per yard • Built-in waste factor so you order enough BUILT FOR THE JOBSITE • Clean, big, tap-friendly layout • Set your concrete (or gravel) price right on each calculator • US or metric units • Light, dark & system themes • Choose your currency ($, £, €, ¥, ₹) • Works 100% offline Estimates are guidance only — concrete yields vary by mix, slump and placement, so always confirm final quantities with your ready-mix supplier before ordering.