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Deck Material & Cost Calculator
Estimate deck boards, joists, rim boards, posts, footings, concrete, fasteners, and material cost in one calculator.
Open calculatorDeck calculators
Plan your deck before you buy materials.
Estimate decking, framing, concrete, hardware, and project cost with practical tools designed for early-stage deck planning.
Deck planning tools
Choose a calculator
Start with the full material calculator, or use one of the focused tools as they become available.
Coming soon
Deck Board Calculator
Estimate the number of deck boards and linear feet needed from your deck dimensions, board width, spacing, and waste allowance.
Tool in development
Coming soon
Deck Cost Calculator
Build a faster budget estimate based on deck size, material type, hardware, and editable local pricing.
Tool in development
Coming soon
Deck Footing Calculator
Calculate concrete volume and bag quantities for cylindrical deck footings using diameter, depth, and footing count.
Tool in development
Coming soon
Deck Joist Calculator
Estimate joist count and total joist footage using deck dimensions and on-center spacing.
Tool in development
Coming soon
Deck Railing Calculator
Estimate railing length, posts, balusters, and related materials for deck perimeter sections.
Tool in development
What to calculate
A deck estimate has several parts.
A useful deck estimate is more than square footage. Material quantity, framing layout, footing concrete, hardware, waste, and local pricing can all materially affect the final plan.
Decking
Board count depends on deck dimensions, actual board width, spacing, stock length, orientation, and waste.
Framing
Joists, beams, posts, and connections depend on deck geometry as well as structural requirements.
Footings
Concrete quantity can be calculated from footing dimensions, but required footing size depends on site and structural conditions.
Budget
Material prices vary substantially by region, retailer, grade, brand, and time, so editable pricing provides a more useful estimate.
Planning guidance
Calculator results are planning estimates.
Material calculators are useful for early budgeting, shopping lists, and comparing project options. They do not replace structural design, manufacturer requirements, permit requirements, or applicable building codes.
Joist spans, beam sizing, footing dimensions, post spacing, ledger connections, guard requirements, and other structural details can vary based on loads, lumber species and grade, soil, frost depth, deck height, and local requirements.
For the best cost estimate, replace default material prices with current pricing from the retailer or supplier you expect to use.
Start planning
Estimate your deck materials now.
Enter your deck dimensions and get an immediate estimate for decking, framing, concrete footings, hardware, and material cost.