The Practical, Mathematical Hub for Supply Chain Decision-Making
Use supply chain tools, inventory management formulas, and structured learning resources to make better decisions on stock, lead times, procurement, and planning. Built for engineers, students, supply chain analysts, and professionals preparing for interviews.
Why Supply Chain Math is different
Most supply chain content explains concepts without showing the numbers. Most calculators show a result without explaining the reasoning. Supply Chain Math connects both.
Math that supports decisions
Turn service levels, demand variability, order costs, and lead times into choices you can explain and defend.
Practical before theoretical
Every formula is tied to a real question: how much to order, how much buffer to hold, when to reorder, or how to evaluate supply risk.
Clear supply chain analytics
Use transparent assumptions, readable outputs, and step-by-step explanations to move from concept to action faster.
Choose how you want to learn and apply
Learning HUB
Follow one of 5 guided paths — Beginner, Inventory, Forecasting, Procurement, or Advanced. A 6-stage supply chain map connects every concept to the right guide and tool so you always know your next step.
Tools
10 browser-based calculators organized in 4 decision areas: inventory planning & replenishment, forecasting & portfolio analysis, lead time & supplier flow, and cost reduction. Free, no signup required.
Library
In-depth guides that explain formulas, trade-offs, and real-world applications. Organized by topic so you always know where to go deeper after using a tool or finishing a path step.
5 Structured Learning Paths — Pick Yours
Each path sequences the right guides and tools in order so you build knowledge without back-tracking. Jump in at the step that matches where you are right now.
🟦 Beginner Path
New to supply chain? Move through fundamentals, forecasting, EOQ, safety stock, reorder point, and KPIs in the right sequence.
📦 Inventory Management
For planners and buyers. ABC-XYZ segmentation, EOQ, safety stock, coverage, cost analysis, and slow-moving stock — all in order.
📈 Forecasting & Planning
Bullwhip effect, push vs pull, IBP, and how to turn variability into safety stock targets. For demand planners and S&OP teams.
🤝 Procurement & Sourcing
Total cost of ownership, Incoterms, supplier evaluation, and savings quantification. For buyers and procurement managers.
10 Free Tools — Organized by Decision Area
Every tool runs instantly in the browser with no signup required. Pick the tool that matches the decision you need to make right now.
Inventory Planning & Replenishment
EOQ & Reorder Point
How much to order and when. Balance ordering cost, holding cost, and service level in one workflow.
Safety Stock Calculator
Set the right buffer against demand and lead time variability without over-committing cash.
Inventory Coverage
Convert on-hand stock into days of coverage for fast daily or weekly replenishment reviews.
Forecasting & Portfolio Analysis
ABC-XYZ Analysis
Segment your portfolio by value and demand variability to focus control on the SKUs that matter most.
Inventory Turnover
Measure how efficiently inventory moves and benchmark cash efficiency across product families.
Slow-Moving Stock Tool
Identify aging inventory and potential write-offs before they become a cash and space problem.
Lead Time & Supplier Flow
Lead Time Calculator
Break total lead time into its components to fix delays at the source before adding more stock.
Supplier Reliability
Score suppliers on delivery, lead time, and quality to make sourcing decisions on data, not anecdotes.
Cost Reduction & Financial Impact
Who this platform is for
Students
- ✓Practice supply chain analytics with clear formulas and worked examples.
- ✓Build confidence in inventory management formulas before exams, projects, or internships.
Engineers
- ✓Connect operational data to inventory, service, and flow decisions.
- ✓Use practical tools instead of relying on rough estimates.
Analysts
- ✓Model EOQ, safety stock calculation, lead-time variability, and supplier performance faster.
- ✓Move from analysis to recommendation with clearer assumptions.
Interview Prep
- ✓Review core supply chain tools, KPIs, and formulas that come up in interviews.
- ✓Use concise guides to explain your thinking with more confidence.
Built to earn trust through clarity
Supply Chain Math is growing into a practical resource platform people can return to when they need an explanation, a formula, or a decision tool they can actually use.
Clear explanations
We explain what the formula does, why it matters, and how to apply it in a business context.
Structured learning
Users can move from beginner topics to more advanced supply chain analytics without losing the practical thread.
Growing knowledge base
The platform keeps expanding with more guides, tools, and curated resources for ongoing learning.
Start with the next decision you need to make
Pick a guided learning path, run a free browser-based calculator, or explore the Library for deeper guides. Everything is free, no signup required, and built to help you make better supply chain decisions faster.