Deck Calculator

Deck Calculator — Estimate Joists, Beams, Posts, Decking Boards & Total Cost Build your deck with confidence. Deck Calculator is a fast, offline estimating tool for contractors, carpenters, builders, and DIY homeowners. Enter your deck dimensions, joist spacing, and material type — get an instant itemized breakdown of joists, beams, posts, concrete footings, decking boards, and total estimated cost. KEY FEATURES COMPLETE DECK MATERIAL LIST Calculate exactly how many joists, beams, posts, and decking boards you need. Supports wood and composite decking. Includes joist spacing (12", 16", 24" O.C.), post spacing, and waste factor customization to account for cuts and defects. FOOTING & CONCRETE ESTIMATE Estimate concrete bags or volume needed for post footings based on hole diameter, depth, and number of posts. Avoid over-ordering or running short on pour day. COST & LABOR ESTIMATE Enter unit rates for lumber, decking, concrete, and fasteners, plus labor cost per square foot or per project. See material cost, labor cost, and total project cost separately. Long labels display cleanly, and values are sized to fit large numbers without truncation. CALCULATE & CLEAR BUTTONS Enter your values, tap Calculate to see results, and use Clear to reset. Clean, simple interface designed for job site use. INTERACTIVE DECK VISUALIZER Visualize your deck layout, joist spacing, and board direction as you adjust dimensions. Verify measurements before ordering materials. HISTORY & EXPORT Save calculations to History. Search and filter your list. Share text summaries, export PDF reports in your selected app language, and delete entries with individual confirmation. SETTINGS Switch units, currency (USD, CAD, EUR, CHF, FCFA, GBP, and more), language (EN, FR, ES, AR, ZH), and theme mode (System / Light / Dark — Dark is default). About Us, privacy policy, terms, and contact links included. BUILT FOR THE JOB SITE • Works offline — no internet required for calculations • No sign-up required — start calculating immediately • Responsive layout for phones and tablets • Dark mode by default with high-contrast text for low-light conditions • Clean, readable UI with clear borders for outdoor use WHO IS IT FOR? Deck contractors, carpenters, general builders, landscapers, real estate professionals, and DIY homeowners planning new decks, repairs, or renovations. WHY CHOOSE THIS APP? Accurate deck material estimates, fast joist and board counts, transparent material and labor costing, multilingual PDF reports, and a clean interface that handles long numbers and multiple units. ABOUT KOCHI DIGITAL Kochi Digital builds minimalist, high-performance construction and real estate calculators. Explore more at kochidigital.com. Official website: https://kochidigital.com/apps/deckcalculator/ Construction calculators: https://volumesolver.com/construction-calculators/ Download Deck Calculator now and get a reliable estimate — joists, beams, posts, footings, decking boards, labor, and total cost — before you order materials.