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Inventory Management Metrics

Inventory Management metrics and KPIs measure how well you balance stock levels against demand. Explore definitions, formulas, and benchmarks for tracking inventory turnover, carrying costs, and stockout rate.

Default directory · A–Z · 13 metrics

Backorder Rate

Backorder rate is the percentage of customer orders that cannot be fulfilled immediately because the requested item is out of stock but expected to be available. It measures how well inventory keeps pace with demand and signals gaps in forecasting, replenishment, or supplier reliability.

Cash Conversion Cycle

The Cash Conversion Cycle, also knows as Cash-to-Cash Cycle Time, is the time between when a business pays its suppliers and when the business receives payment from its customers, usually expressed in days. Keeping active tabs on your Cash Conversion Cycle will aid you in monitoring your finances as cash flows in and out of your business.

Cost Of Goods Sold

The Cost Of Goods Sold (COGS) is the measure of direct costs incurred by a company to manufacture or deliver their product or service. Costs typically include raw material and direct labour, but this varies from business to business, depending on the products or services that are being sold. COGS is the building block to understanding Gross Margin and Gross Margin Percent.

Customer Satisfaction

CSAT is a measure of how satisfied customers are with a company's products or services, most often collected through a survey. It captures customer perception at a specific point in time and is one of the most widely tracked customer experience metrics because it is simple to collect, easy to interpret, and flexible enough to apply at both a granular and aggregate level.

Defect Rate

Defect Rate is the percentage of finished units that fail to meet quality standards. It measures how many units are nonconforming at inspection, during production, or after delivery when a customer identifies a defect. Lower is better because it reflects stable processes, fewer escalations, and less rework.

Fill Rate

Fill rate is the percentage of customer orders fulfilled immediately from available stock, without backorders or lost sales. It measures inventory efficiency, demand forecasting accuracy, and supply chain reliability, and is a key indicator of customer satisfaction and operational performance.

Inventory Accuracy

Inventory Accuracy is the percentage of stock records in your management system that match the actual physical inventory in your warehouse or store. It is a critical supply chain KPI that supports smooth fulfilment, reliable financial reporting, and effective demand forecasting. Discrepancies between system records and physical stock lead to stockouts, overstocking, and financial inaccuracies.

Inventory Quantity

Inventory Quantity is the currently available stock for each product variant a retail location or e-commerce store has available. Keeping track of inventory quantity is important to ensure that there are enough goods in stock to meet customer demand. Businesses should identify the optimal stock level for each product variant and adjust accordingly. If inventory levels are too low, customers may not be able to purchase a desired item or find an alternative solution elsewhere. On the other hand, if levels are too high, it can lead to an overstocking of products and wasted resources.

Inventory Turnover

Inventory Turnover measures how often a business sells through its entire inventory within a given period. It is a key efficiency metric used to evaluate pricing strategy, product demand, and purchasing decisions, and is especially critical for businesses handling perishable goods.

On-time Delivery

On-time delivery measures the percentage of orders delivered to customers on or before the promised delivery date. It helps evaluate the efficiency of the supply chain in meeting customer expectations. On-time delivery is crucial for maintaining high customer satisfaction levels. Timely delivery is often seen as a reflection of a company's reliability, and consistent punctuality can lead to increased customer trust and loyalty. Moreover, on-time delivery helps to avoid unnecessary costs related to late delivery compensation or loss of business, directly impacting the company's bottom line.

On-Time In-Full

On-Time In-Full (OTIF) delivery rate measures the percentage of orders delivered both on the promised date (or within the agreed time window) and complete with all requested items in the correct quantities. It combines punctuality and completeness into a single metric that reflects successful order fulfilment from the customer's perspective.

Perfect Order Rate

Perfect Order Rate measures the percentage of orders that are delivered without any errors, such as missing items, incorrect quantities, or damaged goods. It reflects the overall accuracy and quality of order fulfillment. The Perfect Order Rate (POR) is an essential supply chain metric that measures the effectiveness of an organization’s order fulfillment process. It is calculated by determining the percentage of orders that are executed flawlessly, without any errors or issues. Considered from a customer's perspective, a perfect order is one that arrives on time, contains the right items in the correct quantities, is delivered to the right place, and is accompanied by the correct invoicing.