Keep measured unusable board zones separate from end trimming.
Why does total remaining board length overstate equal-piece yield?
Use the matching calculator
Use this decision sequence
- Mark the already measured excluded intervals along one board.
- Merge overlapping intervals so a shared exclusion is counted once.
- Count complete pieces within each remaining interval independently.
- Include boundary cut loss in your exclusions and per-piece kerf in the separate field.
Keep the quantities distinct
| Quantity or assumption | How to use it |
|---|---|
| Total available length | Can be split into several unusable-for-long-pieces intervals. |
| Per-interval yield | Does not let a piece cross an excluded zone. |
| Overlapping exclusions | Remove their union rather than their area sum. |
Worked comparison
A 5 m board with the interval from 2 to 3 m excluded leaves two usable 2 m sections. Four 1 m pieces fit when reserved kerf is zero. A 3 m piece cannot fit either section despite 4 m total usable length. Overlapping exclusions from 2 to 3 m and 2.5 to 4 m merge into one 2 m exclusion.
Check before using the estimate
You identify and measure exclusions. The tool does not inspect defects, certify material quality or assess strength. The example values are illustrative arithmetic inputs. Replace them with your measured plan, selected product information and actual quote where relevant.
All dimensions, product properties, prices and specifications in this example are illustrative arithmetic inputs. Use the values from your measured plan, selected product data sheet and supplier quote. This guide does not choose construction specifications or certify safety.
Calculation and scope checked 2026-10-04. Methods and scope.