Bottling, Canning & Filling Lines calculator

Cap Requirement Calculator

Estimate the caps needed for a planned good order using whole trial counts. Enter issued and rejected trial caps plus a separate setup allowance.

What this calculator does

  • Plan whole cap issue quantities from observed trial yield and a separate startup allowance.

Formula used

  • Trial yield = (Trial issued − Trial rejected) ÷ Trial issued
  • Production caps = CEILING(Planned good bottles × Trial issued ÷ (Trial issued − Trial rejected))
  • Total requirement = Production caps + Separate setup caps
  • Yield allowance = Production caps − Planned good bottles

Inputs explained

  • Planned Good Capped Bottles: Required accepted capped bottles after trial-based application losses.
  • Trial Caps Issued: Whole caps issued during the representative application trial.
  • Trial Caps Rejected: Issued trial caps lost or rejected within that same trial.
  • Additional Setup Caps: Separate startup allowance excluded from the measured trial yield.

How to use the result

  • Best suited to cap issue planning, trial yield comparisons.
  • Each input is limited to one billion whole units; products and total caps to one trillion. Historical yield is a planning assumption, not an order-completion guarantee.

Common questions

  • Why is the allowance not called expected rejects? The excess includes whole-cap rounding reserve as well as the trial-yield allowance, so it is not an expected reject count.
  • How are exact ratios handled? Bounded integer arithmetic preserves exact requirements, including 21 good bottles at a 7-of-10 yield requiring exactly 30 production caps.
  • Does setup belong in the trial rejects? Keep the extra setup allowance separate from the representative production yield. Do not charge the same startup losses twice.
  • Can a zero order need caps? Yes. Zero planned good bottles retain only the explicitly entered separate setup allowance.

Last reviewed 2026-10-12.