Inventory planning guides
Worked examples you can check line by line, each paired with a free calculator.
DDMRP buffer zones explained, with a worked example
Size red, yellow and green for one item step by step, then decide whether to order.
Safety stock formulas compared: four methods with examples
Why the same item gets 59 or 510 units of safety stock depending on the formula.
ABC XYZ analysis: how to read and use the 9-box matrix
Classify items by value and demand stability, and what to do with each box.
Free calculators
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A fixed-price inventory health and safety-stock checkup: send one export and get a workbook with ABC/XYZ classes, excess and no-movement inventory, safety stock and reorder points, plus buffer screening in the Advanced tier. The analysis is AI-assisted and reviewed and signed off by a CPIM- and DDMRP-certified planner. Ordered and paid through Upwork.