Inventory Management
Master the fundamentals of inventory optimization — order sizing, safety buffers, and performance measurement — and see the underlying formulas at work in real calculators.
Topics in This Category
- Economic Order Quantity fundamentals
- Safety stock and service levels
- ABC analysis and inventory prioritization
- Turnover, DIO, and working capital
Learning Paths
Articles
- What Is Inventory Management?A beginner's guide to what inventory management actually means, why it's harder than 'just count the stock,' and the handful of decisions every inventory system has to make.
- What Is EOQ? (And Why It Matters)A plain-English answer to 'what is EOQ,' starting from the actual business problem it solves rather than the formula, with a note on where the idea came from and when it stops being useful.
- EOQ Formula Explained (Without the Textbook)What each part of the EOQ formula actually means in business terms, why the formula takes the shape it does, and the adjustments people usually forget to make.
- How to Calculate EOQ: Step-by-StepA practical, data-gathering guide to calculating your own EOQ — where each number actually comes from, common data problems, and the reality check before you trust the result.
- Real EOQ Example: Coffee DistributorA fictional but realistic worked example — a specialty coffee distributor calculating EOQ for one SKU, then running into the real constraints that make the textbook answer unusable as-is.
- What Changed? EOQ Decision-Making in PracticeEOQ gives you a number. Real purchasing decisions require weighing that number against supplier minimums, storage limits, seasonality, and volume discounts — this is how that reasoning actually works.
- EOQ vs. Reorder Point: When to Use EachEOQ and Reorder Point get confused constantly because they sound similar, but they answer completely different questions — one sets order size, the other sets order timing, and you need both.
- EOQ Reality Check: When It Works and When It Doesn'tAn honest look at when EOQ actually earns its keep, when it quietly breaks down, and a checklist for figuring out which camp your own inventory falls into.
- What Is Safety Stock? (And Why It Matters)A plain-English answer to 'what is safety stock,' starting from the real problem it solves — forecasts and deliveries are never perfectly reliable — rather than the formula.
- Safety Stock Formula Explained (Without the Textbook)What the Z-score, demand variability, and lead time in the safety stock formula actually mean in business terms, matched exactly to the calculator's real formula — not a generic textbook version.
- How to Calculate Safety Stock: Step-by-StepA practical, data-gathering guide to calculating your own safety stock — where each number actually comes from, common pitfalls, and the reality check before you trust the result.
- Real Safety Stock Example: Northfield Medical DistributorsA fictional but realistic worked example — a medical supply distributor calculating safety stock for one SKU, then running into a real storage constraint the textbook answer didn't account for.
- What Changed? Safety Stock Decision-Making in PracticeSafety stock gives you a number. Real inventory decisions require weighing that number against holding cost, storage limits, shelf life, and a supplier's changing reliability — this is how that reasoning actually works.
- Safety Stock vs. Reorder Point: When to Use EachSafety Stock and Reorder Point aren't two competing methods — safety stock is a direct input INTO the reorder point formula. Here's exactly how that composition works.
- Safety Stock Reality Check: When It Works and When It Doesn'tAn honest look at when the standard safety stock formula earns its keep, when it quietly breaks down, and a checklist for figuring out which camp your own situation falls into.
- What Is a Reorder Point? (And Why It Matters)A plain-English answer to 'what is a reorder point' — the specific decision it answers (when to reorder, not how much) and how it fits with EOQ and Safety Stock.
- Reorder Point Formula Explained (Without the Textbook)The exact reorder point formula, broken into its two terms, with a worked example showing why safety stock has to be calculated first — not derived automatically inside this formula.
- How to Calculate Reorder Point: Step-by-StepA step-by-step walkthrough for gathering the three real inputs a reorder point calculation needs from your own sales and purchasing data, in the order they actually depend on each other.
- Real Reorder Point Example: Cascade Electronics SupplyA full worked reorder point calculation for a fictional electronics component distributor, from raw sales and purchase order data through to a final ordering policy.
- What Changed? Reorder Point Decision-Making in PracticeA reorder point is only as good as the inputs it was built from. Using the Cascade Electronics Supply example, here's what changes when lead time or demand shifts — and how to tell a recalculation is overdue.
- Reorder Point Reality Check: When It Works and When It Doesn'tAn honest look at when the standard reorder point formula is a strong fit, when it quietly breaks down, and a checklist for figuring out which camp a given item falls into.
Glossary Terms
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