Understanding Backorder Rate
How we calculate. Backorder % = backordered lines ÷ total lines × 100. The form uses the same arithmetic as the worked examples on this page. See our methodology and accuracy policy.
Real-world scenario: A typical Backorder Rate case uses backordered lines 150 and total order lines 5000. Enter the same figures below to reproduce the worked path.
What is Backorder Rate?
A demand-fulfillment pain KPI. Lower is better. Distinct from fill rate (which measures quantity shipped vs ordered).
- Line or unit basis—stay consistent
- Same period as order volume
- Lower is better
The Formula
Worked Example
Common Use Cases
- Inventory health: stockout impact
- Customer service: incomplete orders
- S&OP: supply gaps
Pro Tips
- Segment A-items
- Don’t mix cancelled demand
- Pair with fill rate
Limitations: Backorder Rate results are educational logistics and supply-chain planning aids—not SLAs, carrier contracts, or inventory valuation advice. Confirm definitions with your WMS/TMS and finance policies.
FAQ
Same as 100% minus fill rate?
Not always—fill rate is quantity-based; backorder rate is often line-based and may exclude partials differently.
What if total order lines is 0?
Backorder rate is undefined—enter a positive line count.
Authoritative References
For logistics and supply-chain KPI definitions, consult:
- CSCMP — supply chain management resources
- ASCM / APICS — operations and inventory body of knowledge
- ISO 28000 — security management for the supply chain (context)