Layout & geometry
Structure calculators for decks, fences, roofs and stairs.
Explore deck boards, fence panels, roof pitch, stair geometry, and board feet while keeping design and code limits explicit.
These tools help with layout arithmetic and material planning; they do not size structural members or confirm code compliance. Begin with measured or designed geometry and verify all safety-critical dimensions locally.
Deck Board CalculatorPlan deck boards with board width, spacing, orientation, and waste.Fence CalculatorEstimate panels, posts, rails, and concrete from a fence run.Roof Pitch CalculatorRead pitch, angle, rafter length, and slope factor from rise and run.Stair Rise & Run CalculatorExplore a clear stair layout from total rise and available run.Board Foot CalculatorEstimate dimensional lumber volume across multiple board sizes.Plywood & OSB Sheet CalculatorEstimate sheet count from surface area, panel dimensions, and cutting allowance.Wall Stud CalculatorEstimate wall studs from length, spacing, openings, corners, and allowance.
Before calculating
Three checks for a better estimate.
01Separate layout from design
Board rows, fence bays, roof angles, and stair counts are geometric outputs—not proof that an assembly is structurally adequate.
02Use actual product dimensions
Deck-board width, gapping, stock length, fence bays, and lumber pricing dimensions depend on the selected system and supplier.
03Verify regulated work
Stairs, roofs, foundations, guards, and post embedment can involve adopted codes and qualified design.