Collection Planning Calculator
Calculate design-to-delivery timeline, key deadlines, and critical path for fashion collection development.
Inputs
Results
Total Lead Time
20 weeks
Design Deadline (weeks before delivery)20 weeks
Production Order Deadline14 weeks before delivery
Critical Path18 weeks
How to Use This Calculator
- Enter the Number of Styles planned for the collection.
- Set Sampling Phase (weeks), Production Phase (weeks), and Shipping Phase (weeks) for your supply chain.
- Add Buffer Weeks to account for delays and revisions.
- Review Total Lead Time, Design Deadline (weeks before delivery), and Production Order Deadline.
- Use Critical Path to identify the longest constraint and negotiate delivery dates with buyers.
How the result changes with Production Phase (weeks)
| Production Phase (weeks) | Total Lead Time |
|---|---|
| 3.3 | 15.3 weeks |
| 9.05 | 21.05 weeks |
| 16 | 28 weeks |
| 22 | 34 weeks |
What each input means
- Number of Styles
- Total styles in the collection. More styles may extend sampling time.
- Sampling Phase (weeks)
- Time for proto samples, fit samples, and pre-production samples.
- Production Phase (weeks)
- Time from production order to goods ready for shipment.
- Shipping Phase (weeks)
- Transit time from factory to warehouse (sea freight ~4-6 weeks, air ~1-2).
- Buffer Weeks
- Extra weeks for delays, customs, quality issues.
What each result means
- Critical Path
- Minimum time assuming no delays or buffer.
How this is calculated
Worked example, using the default values
- Identify Input Parameters4 parametersNumber of Styles = 20, Sampling Phase (weeks) = 6, Production Phase (weeks) = 8, Shipping Phase (weeks) = 4 = 5 input(s) provided
- Calculate Total Lead TimeTotal Lead Time20 = 20
- Calculate Design DeadlineDesign Deadline20 = 20
- Calculate Production Order DeadlineProduction Order Deadline14 = 14
Engine last updated . Checked against 2 independently-derived tests — how we verify calculators.
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