Pick accuracy
Picks per total minus errors. The single most important warehouse KPI because every error becomes a return or replacement, eating margin twice. Target 99.5%+; healthy operations hit 99.8%+. Below 99%, audit the pick process before anything else.
Cycle time
Order placed to carrier scan, measured at p50 and p95. p50 tells you typical performance; p95 tells you tail-end pain. Target p50 under 24 hours, p95 under 48 hours for standard fulfillment.
Cost per order
Total fulfillment cost (labor + packaging + carrier + accessorials) divided by order count. The cleanest measure of fulfillment efficiency. Compare to your 3PL quote or in-house budget; flag drift over 10%.
On-time shipment rate
Orders shipped within the promised window divided by total orders. A customer-honest measure; customers do not care about cycle time, they care about whether their order shipped when promised.
Returns rate
Returns divided by orders shipped, measured rolling 30 days. Returns rates above 8-10% signal merchandising or sizing problems, not warehouse issues — but the warehouse pays the workflow cost regardless.
Inventory variance
Cycle count discrepancies as a percentage of inventory value. Target under 1%; healthy operations hit under 0.5%. Higher numbers signal pick errors, theft, or process drift.
Talk to a specialist
If you are facing this decision now, a free scoping conversation with a vetted Shop Operations Experts specialist usually saves weeks of back-and-forth. Tell us the situation and we will route you to someone who has shipped the work for a comparable brand.
No sales pitch, no lead-volume games — just a scoped recommendation within one business day.