Inventory & Operations
Calculators for the cost of holding, moving, and managing physical inventory and day-to-day operations.
How these calculators help
Use these calculators when inventory decisions affect cash, storage, ordering cadence, or stockout risk. Carrying cost shows what it costs to hold stock, safety stock estimates the buffer for uncertainty, reorder point turns demand and lead time into a trigger level, and EOQ estimates an order size under stable-demand assumptions.
The tools work best when their inputs come from the same operating reality: the same demand pattern, lead-time assumptions, unit cost, and carrying-cost basis.
See how safety stock, reorder point, EOQ, and carrying cost fit together.
Economic Order Quantity (EOQ) Calculator
Calculate EOQ with the economic order quantity formula, including total ordering and holding costs and an optional comparison against your current ordering policy.
Inventory Carrying Cost Calculator
Estimate the annual and monthly cost of holding your inventory, from a quick percentage or a full cost build-up.
Reorder Point Calculator
Calculate when to reorder stock with a known safety stock, an Average-Max buffer, or a service-level statistical buffer — no separate safety-stock calculation required first.
Safety Stock Calculator
Estimate a safety stock buffer with a quick Average-Max method or an advanced service-level statistical method, plus an optional reorder-point figure.