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Floors & areas

Skirting board cutting plan

A total length is not enough to allocate unjoined pieces to stock lengths. This plan places the longest pieces first, counts saw kerfs and shows every stock length so you can check the proposal.

Your project measurements

Metric units
mm
The starting end is already usable. Include any mitre allowances in the pieces before calculating.
mm
Each separation consumes this kerf. No final cut is needed if the last piece ends exactly at the stock end.
mm
Use quantity 0 to ignore this row. Lengths accept up to three decimal places in millimetres.
mm
Use quantity 0 to ignore this row. Lengths accept up to three decimal places in millimetres.
mm
Use quantity 0 to ignore this row. Lengths accept up to three decimal places in millimetres.
mm
Use quantity 0 to ignore this row. Lengths accept up to three decimal places in millimetres.
mm
Use quantity 0 to ignore this row. Lengths accept up to three decimal places in millimetres.
mm
Use quantity 0 to ignore this row. Lengths accept up to three decimal places in millimetres.

Need a starting point? The initial values are an example.

YOUR ESTIMATE

2 stock lengths

Stock lengths in the proposed plan

Skirting cutting plan previewPieces and kerfs are drawn to scale on up to the first four stock lengths. The numerical breakdown gives the full plan.Stock lengths 1 to 2 of 211,0001,0002700700400400Lengths in mmGreen: pieces · orange: kerfs · grey: offcuts
Pieces required6 pieces
Total piece length4,200 mm
Number of cuts6
Total saw kerf loss18 mm
Remaining offcuts582 mm
Share of length used for pieces87.5 %

Heuristic plan with no guarantee of the minimum number of stock lengths. Pieces are never joined end to end.

Each cut consumes a full kerf. A positive surplus to remove narrower than the kerf is rejected; partial trimming at the end is not modelled.

Ends are assumed usable. Mitre allowances, defects and pattern direction must be included or checked separately.

The diagram shows at most four stock lengths; the numerical breakdown describes every one.

Understand the calculation
  1. Pieces are sorted from longest to shortest, then placed in the first stock length they fit.
  2. Stock length 1, piece 1 (row 1): from 0 to 1,000 mm, length 1,000 mm, following kerf 3 mm.
  3. Stock length 1, piece 2 (row 1): from 1,003 to 2,003 mm, length 1,000 mm, following kerf 3 mm.
  4. Stock length 1: 2,000 mm of pieces + 6 mm of kerfs + 394 mm of offcut = 2,400 mm.
  5. Stock length 1: piece count 2; cut count 2.
  6. Stock length 2, piece 1 (row 2): from 0 to 700 mm, length 700 mm, following kerf 3 mm.
  7. Stock length 2, piece 2 (row 2): from 703 to 1,403 mm, length 700 mm, following kerf 3 mm.
  8. Stock length 2, piece 3 (row 3): from 1,406 to 1,806 mm, length 400 mm, following kerf 3 mm.
  9. Stock length 2, piece 4 (row 3): from 1,809 to 2,209 mm, length 400 mm, following kerf 3 mm.
  10. Stock length 2: 2,200 mm of pieces + 12 mm of kerfs + 188 mm of offcut = 2,400 mm.
  11. Stock length 2: piece count 4; cut count 4.

The estimate depends on your measurements and entered inputs. PDF output uses your browser’s Save as PDF option.

MetraNest · https://metranest.com/en/calculators/skirting-cut-list/ · Méthode : Pour chaque barre : somme des pièces + nombre de coupes × trait de scie + chute = longueur utilisable. La dernière coupe est supprimée seulement si la dernière pièce atteint exactement le bout.

Prepare the cut list

Enter up to six lengths and their quantities, for a maximum of 100 pieces. A zero quantity ignores the row. Each length must already include your required allowances: angles, defects and ends needing trimming are not added automatically.

Understand the final cut

Each separation uses the full saw kerf width. If the last piece ends exactly at the stock end, no final cut is counted. Otherwise, the surplus to remove before this cut must allow for a full kerf. Partial trimming at the end is not modelled.

Check the proposed plan

The algorithm sorts lengths from largest to smallest, then uses the first compatible stock length. This heuristic provides a feasible plan under the entered rules, without guaranteeing the minimum number of stock lengths. The breakdown lists every piece; the diagram is limited to the first four stock lengths.

The formula
For each stock length: sum of pieces + number of cuts × saw kerf + offcut = usable length. The final cut is omitted only when the last piece reaches the end exactly.

Six pieces from two 2400 mm stock lengths

With a 3 mm kerf, two 1000 mm pieces occupy the first stock length: 2000 + 6 + 394 = 2400 mm. The second takes two 700 mm pieces and two 400 mm pieces: 2200 + 12 + 188 = 2400 mm. The total is 4200 mm of pieces, 18 mm of kerfs and 582 mm of offcuts.

Details to check

  • Measure the genuinely usable stock lengths.
  • Check each piece and its allowance before cutting.
  • Keep offcuts separate from material consumed by the saw kerf.

Frequently asked questions

Does this plan always minimise purchases?

No. Placing pieces in descending length order is a heuristic. Another layout can sometimes use fewer stock lengths. The result is never presented as an optimal solution.

Why can a piece almost as long as the stock be rejected?

If a small surplus needs removing, the model requires a full saw kerf for that separation. A positive surplus to remove narrower than the kerf is rejected. Partial end trimming and cutting angles are outside this model.

A method you can check · Content review :

Each tool shows its formulas and assumptions. Worked examples let you repeat the calculation and understand how rounding works.

See MetraNest’s method · Contact and corrections

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