How do you calculate inventory accuracy rate?

Divide the number of records that matched the physical count by the total records counted, then multiply by 100. With 485 matches out of 500 counts, accuracy is 97%.

What is a good inventory accuracy rate?

World-class operations run 97% or better at the record level, with A-items often held to 99%+. The example 97% is solid but still 1 point short of a 98% target.

What tolerance counts as a match?

That is a policy choice: many programs count a record as accurate only at exact quantity, while others allow a small tolerance band for high-count bulk items. Define it before you measure so the number is consistent.

Why is my inventory accuracy dropping?

Common causes are unrecorded scrap, miscounts at receiving, wrong unit-of-measure conversions, unreported moves between locations, and picking without scanning. Cycle counting surfaces the pattern so you can fix the root cause.

Cycle counting vs physical inventory - which drives this?

Both can feed it. Cycle counting samples continuously (often ABC-weighted) and is the preferred source; an annual wall-to-wall physical gives a full snapshot but is disruptive and less timely.

How do I close a 1-point gap to target?

Focus counts on the SKU-location classes generating discrepancies, tighten transaction discipline at receiving and picking, and root-cause each miss rather than just adjusting the number - adjusting without fixing recreates the gap.

Supply Chain & Procurement calculator

Inventory Accuracy Rate Calculator

Inventory Accuracy Rate is the share of counted records whose system quantity matches the physical count, the core KPI of any cycle-counting program. Materials managers and inventory controllers use it to gauge whether the numbers driving MRP, promising, and replenishment can be trusted. Poor accuracy quietly triggers stockouts, expedite freight, and phantom availability that breaks customer promises. Tracking it against a target turns counting activity into a governed, improving process rather than a firefight.

What this calculator does

Calculate inventory accuracy for Supply Chain & Procurement: accurate records as a share of records counted.
Use it to track inventory accuracy against target in Supply Chain & Procurement.
It computes inventory accuracy as matching records divided by records counted times 100, plus the gap to your target.

Formula used

Inventory accuracy = accurate records ÷ records counted × 100
Gap to target = target accuracy − inventory accuracy

Inputs explained

Records that matched the physical count:
Total SKU locations counted:
Target accuracy for your cycle-count program:

How to use the result

Use it after each cycle-count cycle or wall-to-wall physical inventory to trend accuracy and check against your program target.
A record either matches or it does not, so this record-level metric can look healthy even when a few high-value discrepancies distort dollar-value accuracy; track a value-weighted view alongside it.

Current U.S. benchmarks

U.S. manufacturing runs at 75.6% of capacity (Federal Reserve, May 2026). New factory orders are up 2.3% year over year (Census).
Sourcing currencies as of 2026-07-02 (Federal Reserve H.10): 6.7886 CNY and 17.4524 MXN per USD. Landed-cost comparisons move with these daily rates.
U.S. iron and steel imports ran $2.1B in May 2026 (Census International Trade). The U.S. ran a trade deficit of $0.4B in the category that month. Import volumes are the pressure gauge behind tariff and reshoring decisions.

Common questions

How do you calculate inventory accuracy rate? Divide the number of records that matched the physical count by the total records counted, then multiply by 100. With 485 matches out of 500 counts, accuracy is 97%.
What is a good inventory accuracy rate? World-class operations run 97% or better at the record level, with A-items often held to 99%+. The example 97% is solid but still 1 point short of a 98% target.
What tolerance counts as a match? That is a policy choice: many programs count a record as accurate only at exact quantity, while others allow a small tolerance band for high-count bulk items. Define it before you measure so the number is consistent.
Why is my inventory accuracy dropping? Common causes are unrecorded scrap, miscounts at receiving, wrong unit-of-measure conversions, unreported moves between locations, and picking without scanning. Cycle counting surfaces the pattern so you can fix the root cause.
Cycle counting vs physical inventory - which drives this? Both can feed it. Cycle counting samples continuously (often ABC-weighted) and is the preferred source; an annual wall-to-wall physical gives a full snapshot but is disruptive and less timely.

Last reviewed 2026-05-12.