Deck Cost Calculator & 27 Free Deck Tools
Estimate what your deck will cost in 2026, then size every part of it — boards, joists, beams, footings, stairs, and railings. Free deck calculators trusted by thousands of homeowners and contractors.
- 27 specialized tools
- Updated 2026 pricing
- 100% free, no signup
Choose your calculator
Organized by what you're trying to figure out. All tools are free and instant.
Cost & Estimation
Total project cost, material totals, and labor estimates.
Deck Cost Calculator
Estimate total deck cost by size, material, and features.
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Cost Per Square Foot Calculator
Compare installed cost per square foot across materials.
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Deck Labor Cost Calculator
Estimate labor cost separately from materials.
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Deck Permit Cost Calculator
Estimate building permit fees for your deck project.
Open calculator →Deck Material Calculator
Complete materials takeoff: boards, joists, beams, posts, footings, hardware.
Open calculator →Deck Cost Per Square Foot Calculator
2026 deck cost per square foot by material, DIY vs contractor.
Open calculator →Multi Level Deck Cost Calculator
Cost for two- and three-level decks, second-story and elevated builds.
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Deck Replacement Cost Calculator
Cost to replace deck boards, railings, or rebuild the whole deck.
Open calculator →Framing & Structure
Joists, beams, posts, footings, and load-bearing structure.
Deck Joist Calculator
Calculate the number of joists required by spacing.
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Deck Beam Span Calculator
Determine maximum beam span by lumber size and joist length.
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Deck Footing & Concrete Calculator
Calculate concrete needed for deck footings.
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Deck Post Calculator
Determine post count, size, and load.
Open calculator →Decking Boards
Board count, linear footage, and material waste.
Deck Board Calculator
Calculate boards needed by deck size and board width.
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Deck Board Footage Calculator
Convert deck area to linear board footage.
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Deck Fastener Calculator
Estimate screws or hidden clips for your deck.
Open calculator →Deck Board Calculator
How many deck boards you need, by board width, gap, and length.
Open calculator →Square Feet to Linear Feet Calculator
Convert deck square footage to linear feet of decking, and back.
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Trex Decking Calculator
Boards and cost for Trex, TimberTech, AZEK, Fiberon, and Deckorators.
Open calculator →Pool Deck Calculator
Decking area, boards, and cost for a deck around an above-ground pool.
Open calculator →Stairs & Railings
Stair stringers, treads, balusters, and railing materials.
Stair Stringer Calculator
Calculate stair stringer length, rise, and run.
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Deck Railing Cost Calculator
Estimate cost of railing by linear footage and material.
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Deck Baluster Calculator
Count balusters needed for code-compliant railing.
Open calculator →Deck Stair Calculator
Number of steps, rise per step, total run, and stringers needed.
Open calculator →Finishing & Maintenance
Stain, sealer, fasteners, and ongoing maintenance.
Advanced Tools
Comparison tools and specialty calculations.
Deck charts & code guides
Span tables, code requirements, and estimating walkthroughs — the reference material behind every calculator.
Deck Joist Span Chart
Max spans for 2×6 through 2×12 at 12, 16, and 24 inch spacing.
Read the guideDeck Beam Span Chart
Built-up beam spans and post spacing by joist span.
Read the guideRailing Height & Code
36 vs 42 inch guards, 4-inch spacing, and load requirements.
Read the guideDeck Permit Requirements
When you need a permit, what it costs, and every inspection.
Read the guideHow to Estimate a Deck
The nine-step takeoff professionals use to price a build.
Read the guideWhich Calculator to Use
Every tool on this site, matched to the question you're asking.
Read the guideTop picks for your deck project
As an Amazon Associate we earn from qualifying purchases. Affiliate disclosure.
Outdoor Solid Composite Decking Boards 96"x5.43"x1", Polymer Composite Decking for All Weather Use,Poolside,Backyard,Patio(6 Pcs,Redwood and Maple,21.72sqft)
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Egadis 1 Pack 36 in. H x 5 ft. W Porch and Deck Railing Kit Without Post, Black Textured Powder-Coat Finish Modular Aluminum Railing System for Outdoor Decks, Porches & Balconies(1 Panel)
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SUNVIE All-in-One Low Voltage Deck Lights Kit, 8 Pack 5W Low Voltage Landscape Lighting with 60W Transformer 100FT Wire and Connectors, 3000K 12-24V AC/DC LED Deck Step Lights for Fence Post Patio
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Ready Seal Exterior Wood Stain | Semi-Transparent Oil-Based Formula | Professional Grade Stain and Sealer in One | Ideal for Decks, Fences, Pergolas, Wood Siding & More | 5 Gallon | Natural Cedar
View on AmazonBuilding something else? Try our sister calculators
Smart Fencing Calculator
Estimate fence cost by material and linear footage.
Smart Roofing Calculator
Free roof replacement cost estimates by material.
Smart Drywall Calculator
Android app — drywall sheets, mud, and tape estimates.
Smart Fencing Calculator
Android app — fence cost estimates on the go.
Need a quick total cost estimate?
Start with our flagship deck cost calculator — get a full installed-cost range in under 60 seconds.
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