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Inventory turnover
Measure inventory turns and average days in inventory.
PerformancePERFORMANCE
Unit Fill Rate & Order Fill Rate Calculator
Compare unit fill rate and complete-order fill rate on the same first-release order cohort, without adding an on-time test.
Unit & order fill rate calculator
Compare unit fill rate and complete-order fill rate on the same first-release order cohort, without adding an on-time test.
YOUR RESULT LIVE CALCULATION
First-release unit fill rate
95% unit fill
COMPLETENESS, NOT OTIF- Complete-order fill rate
- 90%
- Units not filled on first release
- 50
- Orders not completely filled
- 20
- Units requested / supplied
- 1,000 / 950
One positive-unit order cohort at first release. There is no delivery-time test or eventual-recovery adjustment.
BEHIND THE NUMBER
How the calculation works
Use one cohort and one first-release definition. Every assessed order must request at least one unit. A partially supplied order can improve unit fill rate while still failing complete-order fill rate. Counts are checked for consistency: each incomplete order must have at least one missing unit, and each complete order must include at least one supplied unit.
Unit fill rate = units supplied / units requested × 100; order fill rate = fully supplied orders / orders assessed × 100
When this calculation helps
Unit fill rate and complete-order fill rate have different denominators. A large order with a small shortage can leave unit fill high while the order still fails the completeness test.
Check the interpretation
Use one order cohort and document whether late supply counts toward fill. Do not compare a unit-weighted measure from one period with an order-weighted measure from another. OTIF adds a timing condition that fill rate alone does not contain.
This excludes on-time delivery, quality, returns, and eventual backorder recovery. It is not OTIF. Agree the cohort, order completeness rule, exclusions, and measurement point before comparing performance.
Good to know
Can fill rate and OTIF differ?
Yes. Fill rate here measures first-release completeness, with no delivery-time test. OTIF requires an order to meet both the agreed timeliness and completeness rules.
Why are some counts rejected?
A complete order must contain a supplied unit, and each incomplete order must lack at least one requested unit. Counts that violate these conditions cannot describe the same positive-unit order cohort.