Deck Cost & Materials Calculator
Deck boards, framing, hardware, and cost.
Project planning / 6 calculators
Deck, Fence & Exterior Material Calculators
Exterior projects combine lengths, areas, and repeated parts. A fence needs posts and rails; a roof needs its sloped area; a deck needs both its frame and finished surface. Choose the tool for the assembly you are planning.
Choose your calculator
Free. In your browser. No sign-up.Stair Calculator
Risers, treads, stringers, and a stair diagram.
Fence Calculator
Posts, rails, pickets, and your material budget.
Roof Pitch Calculator
Pitch, angle, and the roof-area multiplier.
Roofing Calculator
Shingles, bundles, and roofing supplies.
Siding Calculator
Siding coverage, pieces, waste, and cost.
Before you order
Plan the material, then the quantity.
Measure the actual project geometry
Write down fence runs and gate openings, deck dimensions, or each roof section. For a roof, distinguish the horizontal footprint from the sloped surface you will cover.
Separate structure from finish
Decking, framing, roofing, and siding have different purchase units and waste factors. Use the relevant calculator for each scope and check where their material lists overlap.
Check the design before ordering
These tools estimate quantities. Confirm structural spans, connections, stair dimensions, and local requirements for your project before treating the estimate as a construction plan.
Roof pitch converts a measured slope into an area multiplier. Use the roofing calculator when you also need shingles, bundles, and roofing supplies.