Inventory Management Calculators

These tools help you move away from gut-feel ordering and manual spreadsheets toward simple, transparent rules for when and how much to reorder.

Who are these tools for?

Warehouse and inventory managers who need practical reorder rules.
Operations teams that want to reduce emergency purchases and last-minute shipments.
Small and medium businesses that cannot afford sophisticated inventory systems.
E-commerce sellers balancing stock across marketplaces, stores, and warehouses.
Founders and finance leaders who want to understand how much cash sits in stock.

Reduce stockouts on critical SKUs without exploding overall inventory.
Cut obsolete and slow-moving stock by tightening policies on low-value items.
Improve cash flow by aligning order sizes and frequencies with real demand.
Make lead-time and service-level assumptions explicit so teams can discuss and adjust them.
Standardize how inventory decisions are made across locations and teams.

Find the economic order quantity that minimizes total ordering and holding cost for a single item.

Size production lots to balance setup cost and holding cost when you produce and consume at the same time.

Work out when you should place the next order based on demand during lead time.

Estimate demand during lead time so you can combine it with safety stock and reorder point rules.

Translate service level targets and demand variability into the buffer stock you need.

Measure how much demand you actually fulfill from stock versus how much is backordered.

Segment SKUs into A/B/C classes so you can focus policies and effort on high-impact items.

Track how fast you convert inventory into sales using COGS and average inventory.

Compute average inventory over a period so you can plug it into EOQ, turnover, and cash-flow analysis.

Translate inventory value and holding rate into a clear cost number for financial decisions.