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Free learning tools and guides on stock planning.

• Safety Stock Simulator

  A 52-week teaching year: forecast, uncertainty, replenishment, then the consequences for service, turns, and cash.

• Own-data Safety Stock Simulator

  Illustrative estimates for up to 10 SKUs. One average weekly forecast, your stock, and your prices.

• Starter Forecast

  A 12-week average of your sales history, written as whole units for each week of the plan. The file stays in your browser.

• DIFOT Calculator

  On time and in full for each purchase order line. The files stay in your browser.

• Planning glossary

  Plain-English definitions for time-phased planning: safety stock, lead time, MOQ, forecasting and the rest.