100 free tools · 8 focused sections
Structures & Carpentry calculators
Estimate structural materials, protective membranes, stock lengths, fastening needs, waste and costs for building projects.
Selection guidance
Choose the right structures & carpentry calculator
Take off materials by assembly
Boards, panels, fasteners, flashing and membranes should be estimated as separate layers with their own stock sizes.
Do not infer capacity
A material count does not establish allowable span, connection strength, footing size or wind resistance.
Lay out before ordering
Stock lengths, joints, openings and pattern direction often control waste more than total area.
16 calculators
Decks
Deck boards, joists, screws, fascia, railings, footings, stain and cost.
9 calculators
Fences & gates
Fence materials, posts, rails, pickets, gates, mesh, paint and cost.
30 calculators
Roofing & gutters
Roofing, soffits, fascia, sheathing, underlayment, ridge caps, drip edge, debris and gutter guards.
20 calculators
Framing, lumber & membranes
Studs, joists, rafters, trusses, lumber, plywood, subfloors and protective wraps.
3 calculators
Sheds & outdoor structures
Sheds, pergolas and related outdoor structure materials.
16 calculators
Doors, windows, cabinetry & trim
Openings, cabinetry, shelving, molding, trim and wall cladding.
2 calculators
Stairs & railings
Stair geometry, stringers and railing quantities.
4 calculators
General structural planning
Additional structure and carpentry calculators.
About these calculators
Joist hangers, wall plate lumber, deck balusters, roofing starter strip, plywood cost, gutter hangers, hidden deck fasteners, soffit materials, roof fascia boards, deck-post quantity, floor-joist blocking, roof replacement, deck building, fence installation, window installation, roof area, valleys, step flashing, house-wrap tape, siding starter strips, hurricane ties, subfloor adhesive, crawl-space vapor barriers, roofing, decks, fences, framing, lumber, plywood, sheds, pergolas, doors, windows, cabinetry, stairs and trim calculators. Each tool provides a task-specific estimate, explains its assumptions, and rounds purchasing quantities where appropriate. Supplier specifications and local requirements remain the final authority.