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Inventory Accuracy Calculator
Measure the percentage of counted SKU-location records that match your inventory system. Track stock record accuracy after a physical count.
What does this calculator measure?
Inventory record accuracy is the percentage of checked SKU-location records whose physical quantity matches the recorded quantity. This calculator uses exact matches: one SKU stored in two locations creates two separate records to check.
Enter your figures
Use one consistent period. Calculations run locally in your browser.
Total distinct records counted under the same counting policy.
Records with physical quantity equal to the system quantity.
Your result
Fill in all fields or load the worked example to see your result.
Put your figures to work
Keep stock movements and location records together to reduce the gaps found during your next count.
Start managing inventoryFormula and worked example
Inventory record accuracy (%) = Matching records ÷ Records checked × 100
If 190 of 200 counted SKU-location records match exactly, inventory record accuracy is 95%. The other 10 records need reconciliation.
How to use the calculator
- Choose the product, category or business and the period you want to review.
- Enter the figures described beside each field using consistent units.
- Review the result alongside the assumptions below before changing purchasing or stock plans.
How to interpret your result
This is a record-level metric, not a measure of the financial size of discrepancies. A one-unit mismatch and a hundred-unit mismatch both count as one inaccurate record. Keep your tolerance policy consistent; this version uses exact matches. Investigate receiving, picking, transfers and adjustments before changing recorded quantities.
Explore the inventory workflow in My Inventory ItemsFrequently asked questions
Is accuracy the same as shrinkage?
No. Accuracy measures agreement between physical and recorded quantities. Shrinkage measures missing inventory and may use units or value.
Should I count a product in each warehouse separately?
Yes, for this SKU-location definition. A product in two warehouses creates two records, and each location can have a different discrepancy.
Can this show the value of discrepancies?
No. It counts matching records. Review quantity differences and unit costs separately to understand the financial impact.