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Deck CostInstalled $/sq ft
Deck MaterialBoards + hardware
Composite CostTrex · TimberTech
Joist SpanIRC R507.6
Trex CalculatorBrand-accurate
Cost & Pricing28 calcs
Material22 calcs
Railings12 calcs
Structural21 calcs
Stain & Seal8 calcs
Compare Materials7 calcs
Footings8 calcs
Stairs11 calcs
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Day/Night Toggle5 times · 3D
Stair ConstructionAnimated · SVG
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Free deck calculators that follow IRC code.

121 calculators · 46 interactive 3D animations · 26 in-depth guides. IRC 2021 compliant. No signups, no paywalls.

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DeckMath

The free deck calculator + 3D animation platform. Mobile-first. IRC 2021 compliant. No signups, no paywalls.

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Deck Cost Calculator
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Composite vs Wood Decking
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How to Build a Deck
Trex vs TimberTech Comparison

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