Fill Rate Calculator
Fill rate measures the percentage of customer orders that are fulfilled from available inventory without backorders or lost sales. It is a critical metric for customer service and inventory performance.
Input Parameters
Order-Based Fill Rate
Unit-Based Fill Rate (Optional)
Formula
Fill Rate = (Orders Filled Completely / Total Orders) × 100%This metric shows what percentage of customer orders were shipped complete from available stock. An alternative calculation uses units: Units Shipped / Units Ordered.
Variable Definitions
Order Fill Rate
Percentage of orders shipped complete without partial shipments.
Line Fill Rate
Percentage of order lines fulfilled from available inventory.
Unit Fill Rate
Percentage of units shipped versus units ordered.
Example Calculation
Scenario: A distributor tracks monthly fulfillment: - Total orders received: 500 - Orders shipped complete: 475 - Total units ordered: 10,000 - Total units shipped: 9,700 Order Fill Rate = 475 / 500 × 100% = 95% Unit Fill Rate = 9,700 / 10,000 × 100% = 97%
How to Interpret Your Result
Understanding fill rate performance: • 95-99%: Excellent - meeting industry best practices • 90-95%: Good - room for improvement • 85-90%: Average - significant opportunity for improvement • Below 85%: Poor - likely causing customer dissatisfaction Consider the cost of improving fill rate vs. the cost of lost sales and customer dissatisfaction.