List your current-state (or future-state) process steps with cycle time, changeover, uptime, staffing and WIP inventory per step. The tool computes total lead time, total cycle (value-added) time, takt time, process cycle efficiency and rolled %C&A automatically, draws a value-stream diagram with a lead-time ladder, and flags any step that cannot keep up with customer demand. Lean / Six Sigma. Exports to Word & CSV.
| Step | C/T (sec) | C/O (min) | Uptime % | Operators | WIP before step (units) | %C&A (optional) |
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⚠️ This is a planning and analysis aid, not a substitute for walking the actual process ("go to the gemba") and timing it directly. Takt time only reflects value against the demand and available-time figures you enter — recheck them whenever demand or shift patterns change. %C&A figures should come from asking the actual downstream customer of each step what fraction of work arrives usable without correction, not from a guess. This calculator does not fabricate benchmark numbers — process cycle efficiency bands shown are the widely-cited Lean Six Sigma rule-of-thumb ranges, not a guarantee for your process. References: Rother & Shook, Learning to See (Lean Enterprise Institute); Lean Enterprise Institute Lexicon; ASQ / Six Sigma DMAIC.