Cost-modeling and operations-finance calculators. Runs entirely in your browser; no data leaves the page.
| Tool | Use when |
|---|---|
| Cost of Poor Quality (COPQ) calculator | You have scrap, rework, inspection and complaint costs and need to price them in dollars and test an improvement project's payback and NPV. |
| Make-vs-Buy / TCO calculator | You are choosing between making something and buying it, or between two suppliers or processes, and want the volume where the decision flips, including setup, quality, inventory and risk costs. |
| Safety-Stock & Service-Level Cost Optimizer | You hold inventory of an item with uncertain demand and want the order quantity, safety stock and reorder point, what each service level costs, and the service level that minimizes total cost. |
| Sample-Size & Cost-of-Testing Planner | You are planning a comparison test (new vs. current, before vs. after) and need to know how many units to test, how power rises with sample size, and the sample size that minimizes testing cost plus the cost of missing a real effect. |
| Process-Chain Should-Cost Builder | You are preparing for a supplier negotiation or a make-vs-buy question on a product made through several process steps (for example extrusion, print, lamination, pouch-making) and want a rough, bottom-up price range, where the cost sits, and how much margin stacks when the steps are in separate companies. |