Estimate door casing, window trim, wall molding, chair rail, picture rail, and custom linear trim with waste, whole stock pieces, warnings, and cost.
Calculate each opening or run at full precision, sum the project, then apply one waste allowance before purchasing whole stock pieces.
Door casing excludes the bottom by default, while four-sided window casing includes all sides unless another configuration is selected.
one face = 2 × height + width (+ optional bottom)four sides = 2 × (width + height)apron = width + 2 × overhangplanning length = base length × (1 + waste rate)pieces = ceil(planning length ÷ stock length)A 3 × 7 ft door needs 17 ft on one face or 34 ft on both. Three doors need 102 ft before waste; 10% gives 112.2 ft, requiring 10 pieces of 12 ft stock.
A 4 × 5 ft four-sided window needs 18 ft. Three windows need 54 ft, or 59.4 ft with 10% extra, requiring five 12 ft pieces.
Two 0.9 × 2.1 m doors trimmed on both sides need 20.4 m before waste and 22.44 m after 10%, requiring ten 2.4 m pieces.
Total footage alone may not prove that selected stock can supply every casing leg or head.
Waste is applied to the summed base project length, never again to stock quantity.
Preset lengths are editable conveniences and do not imply availability.
This calculator does not optimize board assignments, offcuts, miters, or copes.
Standard casing uses two legs and one head per face. Bottom trim is optional and never assumed.
Choose four sides, top plus two sides, or custom. An optional apron is added separately using explicit overhang.
Combine doors, windows, walls, and custom linear items. Project waste is applied after included items are summed.
Purchased length reflects whole stock pieces. Surplus may not be reusable because cut sizes, defects, miters, and grain can matter.
Pricing uses whole pieces or purchased linear length. Decorative block cost is separate; labor, finish, fasteners, delivery, and tax are excluded.
Calculate each casing or run, sum the lengths, add waste once, and round whole stock pieces upward.
One face normally uses two heights plus one width.
Usually not; enable bottom trim only when the project includes it.
Four-sided casing is twice the sum of width and height.
Choose waste for project complexity; 10% is editable, not universal.
Yes, metric measurements and stock lengths are supported.
No. Width and thickness are informational.
No. It is primarily a linear-stock estimate.
Yes, use wall or custom linear mode.
Yes, enter the relevant wall runs.