How do you calculate shipment accuracy?

Divide the count in your category by the total audited and multiply by 100. Here 8 / 250 x 100 = 3.2%. If 8 is your error count, that means a 3.2% error rate, or 96.8% accurate.

What is a good shipment accuracy rate?

World-class outbound accuracy runs 99.5% or better; many contracts set 98-99%. Read the metric carefully — this tool reports the counted category, so an 8-of-250 error count is a 3.2% defect rate, not a passing accuracy figure.

What does the gap to target mean here?

It is the difference between the computed rate and your target. With a 3.2% computed rate and a 95% target the gap shows as 91.8 points — a reminder to confirm whether you are measuring the error category or the accuracy category before interpreting.

How big should my audit sample be?

Larger is tighter. At 250 shipments a single find shifts the rate by 0.4 points, so for a stable estimate near a 99% target you generally want several hundred to a few thousand shipments per period.

Shipment accuracy vs order accuracy?

Order accuracy checks whether the order was picked and packed correctly; shipment accuracy checks the shipped parcel — right items, right count, right address, undamaged. A perfect pick can still ship to the wrong door.

How do I improve shipment accuracy?

Attack the dominant error type first — scan-verify at pack, weight-check to catch shorts and overs, and address validation before label print. Reducing your 8 errors to 2 in this sample would move the counted rate from 3.2% to 0.8%.

WMS, Warehouse Labor & Fulfillment calculator

Shipment Accuracy Calculator

Shipment accuracy expresses the share of your audited outbound shipments in a defined error category as a percentage of all shipments checked, and compares it against the accuracy target you commit to customers. Distribution and fulfillment leaders use it to track outbound quality, trigger root-cause reviews, and defend SLA performance in customer QBRs. It matters because a single point of accuracy erosion at scale means thousands of wrong, short, or damaged shipments, chargebacks, and returns — outbound accuracy is the metric customers judge you on most directly.

What this calculator does

Estimate shipment accuracy for wms, warehouse labor and fulfillment using production-ready inputs so teams can track KPI performance and decide whether corrective action is needed.
Use it when shipment accuracy in wms, warehouse labor and fulfillment needs a clean rate and gap-to-target you can put on a tier board.
It computes an error-category rate as a percentage of audited shipments and the gap between that rate and your target.

Formula used

Shipment accuracy rate = shipment accuracy count ÷ total shipment accuracy population × 100
Shipment accuracy gap to target = shipment accuracy rate - target shipment accuracy rate

Inputs explained

Shipments with errors:
Total shipments audited:
Target shipment accuracy rate:

How to use the result

Use it when reporting outbound quality, sampling a shift's shipments for defects, or checking whether performance clears a contractual accuracy target.
The result is only as sound as the sample — a small or non-random audit of 250 shipments can badly misrepresent the true population rate, so widen the sample before acting on the number.

Current U.S. benchmarks

On-highway diesel averages $4.58 per gallon this week (EIA), trending down over recent periods. Truck tonnage is up 3.4% year over year (ATA via FRED).
Manufacturing hourly earnings average $30.27 (BLS, Jun 2026), up 4.4% from a year earlier. Median machinist pay is $28.24/hr (OEWS 2025), with state medians on each state page. Manufacturers have 529k open positions nationally (BLS JOLTS).

Common questions

How do you calculate shipment accuracy? Divide the count in your category by the total audited and multiply by 100. Here 8 / 250 x 100 = 3.2%. If 8 is your error count, that means a 3.2% error rate, or 96.8% accurate.
What is a good shipment accuracy rate? World-class outbound accuracy runs 99.5% or better; many contracts set 98-99%. Read the metric carefully — this tool reports the counted category, so an 8-of-250 error count is a 3.2% defect rate, not a passing accuracy figure.
What does the gap to target mean here? It is the difference between the computed rate and your target. With a 3.2% computed rate and a 95% target the gap shows as 91.8 points — a reminder to confirm whether you are measuring the error category or the accuracy category before interpreting.
How big should my audit sample be? Larger is tighter. At 250 shipments a single find shifts the rate by 0.4 points, so for a stable estimate near a 99% target you generally want several hundred to a few thousand shipments per period.
Shipment accuracy vs order accuracy? Order accuracy checks whether the order was picked and packed correctly; shipment accuracy checks the shipped parcel — right items, right count, right address, undamaged. A perfect pick can still ship to the wrong door.

Last reviewed 2026-05-12.