Choose typical stick length to see pieces and waste.
Common range 5–15% to cover defects and mistakes.
Optional, for single stock length approach.
Approx. blade thickness; used for joints and corners.
Tiny trims per seam; applied to joints between sticks.
Coped or mitered corners usually add waste.
Room Builder (Rectangle Presets)
Quickly add four walls for a rectangular room. Numbers use your selected unit.
Adds four walls named “Room - N/E/S/W”. Opening width is applied to the selected wall.
Stair Runs
Compute sloped skirting along stairs. Steps use small units (mm).
Length = steps × √(riser² + tread²) + landing edges.
Mixed-Length Cut-List Optimization
Use multiple allowed stick lengths to cover the requirement, minimizing waste or cost.
If prices are omitted, “Minimize waste” is recommended. Numbers use your selected unit.
Walls / Segments
Enter each wall length. Subtract openings via the "Openings width" column.| # | Room / Wall | Length (m) | Openings width (m) | Exclude |
|---|
Tip: Add corridors separately. Set "Exclude" for walls without skirting.
Example Data Table
| Room / Wall | Length (m) | Openings width (m) | Exclude |
|---|---|---|---|
| Living A | 5.2 | 0.9 | No |
| Living B | 3.9 | 0 | No |
| Hallway | 4.6 | 0.8 | No |
| Kitchen North | 3.1 | 1.6 | Yes (cabinets) |
Formula Used
The calculator sums effective wall lengths, subtracts openings, adds practical allowances, then rounds to pieces using either a single stock length or mixed-length plan.
effective_wall_i = max(0, wall_length_i − openings_width_i)
Total_effective = Σ effective_wall_i (excluding marked walls)
Corner_waste = inside_corners × waste_inside + outside_corners × waste_outside
Kerf_waste = kerf_per_cut × (joints_count + inside_corners + outside_corners)
Joints_allow = allow_per_joint × joints_count
Subtotal = Total_effective + Corner_waste
Overage_add = Subtotal × (overage_pct / 100)
Required_len = Subtotal + Overage_add + Kerf_waste + Joints_allow
If single stock length:
Pieces = ceil(Required_len / stock_length)
Total_stick= Pieces × stock_length
Pack_waste = Total_stick − Required_len
If mixed-length optimization:
Choose nonnegative counts n_k of allowed stick lengths L_k to satisfy:
Σ(n_k × L_k) ≥ Required_len
Minimize either total cost Σ(n_k × Price_k) or waste Σ(n_k × L_k) − Required_len.
How to Use
- Select your preferred length unit.
- Use Room Builder or add walls manually.
- Optionally add Stair Runs via steps, riser, and tread.
- Set kerf, joint allowance, and corner waste values.
- Pick a single stock length, or enable Mixed-Length Optimization.
- Click Calculate to see totals, pieces, waste, and plans.
- Export clean summaries with Download CSV or Download PDF.
FAQs
Yes. Enter the combined doorway or opening width in the Openings width column for that wall so the baseboard length is reduced accordingly.
Typical overage is 5–15% to cover matching grain, damage, and unforeseen cuts. Complex rooms or premium profiles may need more to ensure consistent appearance.
Kerf is the material lost to each saw cut. Joints allowance adds tiny trims at seams. The calculator multiplies these by the estimated number of cuts and joints.
Corners often require coping or precision miters, causing offcuts. Enter counts and per-corner waste so the total length reflects realistic, buildable pieces.
Yes. Enable the mixed-length optimizer and enter allowed stick lengths and optional prices. The tool estimates a plan to minimize waste or cost for your project.
This planner selects stick counts to cover total length efficiently. Export CSV if you need a detailed cut map and use a dedicated cutting‑stock solver for per‑wall sequencing.