Verify the inputs
Measure or document each input. If a value is only an estimate, record its source and test a conservative alternative.
Construction/ CALCULATOR
Skirting length and whole-board estimate
Separate measured perimeter, omitted openings, extra returns, cutting allowance and whole lengths.
FROM ESTIMATE TO ACTION
Use the result, not just the number.
Keep the calculation traceable
Save the input link or copied result together with the date, units and assumptions. A number without its inputs cannot be checked later.
Confirm the decision
Compare the estimate with the related guide, current product data and requirements that apply at your location before buying or building.
Inputs to verify
- Measured finish perimeter (m)
- Sum the actual runs; do not derive an irregular room from floor area.
- Openings with no skirting (m)
- Total clear lengths that genuinely receive no skirting.
- Additional returns and projections (m)
- Include recess sides not already included in the perimeter.
- Cutting and repair allowance (%)
- Choose from the real cut schedule; no universal allowance.
- Usable length of one board (m)
- Actual usable stock length after damaged ends are removed.