How the calculation works
Planned length = combined required length × (1 + allowance ÷ 100). Minimum stock count by total length = planned length ÷ stock length, rounded up. Remaining total length = purchased length − planned length.
Use the result with care
This is a lower bound by total length, not a purchase-ready cutting plan. For example, multiple required pieces may not fit into the stock lengths even when their total fits. Saw cuts, end trimming, unusable offcuts, joint positions and individual piece lengths are not modelled. Verify a cutting layout before ordering.
Your figures stay in this page
The calculation runs in your browser. These entries are not sent to a calculator service or saved by this tool. Reset returns the form to its starting values.