Picker staffing calculator
Estimate how many pickers a shift needs from order volume, lines per order and pick rate. Use it to plan a normal day, a peak day, or the extra labor a promotion will need.
Estimate pickers per shift
Use the pick rate your team achieves on a normal day, not a best day.
- Pickers needed per shift
- 4
- Order lines per day
- 2,000
- Picker-hours needed
- 22.2
Calculated in your browser. Nothing you enter is sent or stored.
The formula
Lines per day = orders per day × lines per order; picker-hours = lines per day ÷ pick rate; pickers per shift = ceil(picker-hours ÷ productive hours per picker per shift)
- Orders per day
- Orders to pick in the day or shift you are staffing. Use the peak day you are planning for, not the monthly average, and include B2B and replacement orders.
- Lines per order
- Average distinct SKU lines per order. A line is one SKU on one order, whatever the quantity. Divide total order lines by total orders from your history.
- Pick rate
- Lines one picker completes per hour, including walking, scanning and exceptions. Measure it from your own pick history over several normal days.
- Productive hours per shift
- Hours a picker actually spends picking: shift length minus breaks, briefings, cleanup and time on other tasks such as replenishment or packing.
Worked example
Say you expect 1,200 orders on a peak day, averaging 2.5 lines per order. That is 1,200 × 2.5 = 3,000 lines. Your pickers average 90 lines an hour, so the day needs 3,000 ÷ 90 ≈ 33.3 picker-hours. On an 8-hour shift with 6.5 productive hours per picker, 33.3 ÷ 6.5 ≈ 5.1, which rounds up to 6 pickers. If you run two shifts, split the orders between them and calculate each shift separately.
Where your pick rate comes from
Pick rate is the input that moves the answer most, and it varies with how you pick. Batch picking several orders in one walk usually covers more lines per hour than picking one order at a time. Following the walk sequence and keeping fast movers near the dispatch area both shorten travel. The picking methods guide compares the options.
Measure your own rate rather than borrowing one. A rate from another warehouse reflects its layout, product sizes and order profile, not yours.
Plan for peaks and cut-offs
Orders rarely arrive evenly. If most orders land after lunch and the carrier collects at 4 p.m., the real constraint is lines per hour in that window, not across the whole day. Run the calculation for the busy window and staff it.
New or temporary pickers work more slowly in their first days. Allow for that on peak days, and train them before the peak rather than during it.
Common staffing calculation mistakes
- Staffing for the average day, so every busy day runs late.
- Confusing units with lines. Picking ten of one SKU is one line and takes far less time than ten different SKUs.
- Treating paid hours as productive hours.
- Forgetting that packing, replenishment and receiving need their own people.
- Ignoring absence and holidays when turning pickers per shift into headcount.
Measuring pick rates in NextStock
NextStock sorts pick lists by the walk sequence of each location and supports discrete picking and batch pick-then-sort. KPI reports include operator throughput and order cycle time, and can be delivered on a schedule, so the pick rate you enter here comes from your own floor. Wave planning is on the roadmap and not available yet. See reports and alerts for the full list of reports.
Frequently asked questions
Short, direct answers to the questions warehouse teams ask most.
What is a typical pick rate?
There is no single figure worth planning on. Rates depend on warehouse size, travel distance, product size, lines per order, picking method and how much scanning each pick needs. Measure a week of your own picking, excluding unusual days, and use that. Recheck after changing layout, slotting or picking method.
Does this calculator include packing staff?
No. It covers picking only. Packing speed depends on orders and units rather than lines, so calculate it separately: orders per day divided by orders packed per hour, then divided by productive hours. Do the same for receiving and replenishment, then add the results for the total floor team.
How do I turn pickers per shift into a headcount?
Pickers per shift is the number who must be working at once. To get headcount, allow for days off, leave, sickness and training. Multiply by the number of shifts and the days you operate, then divide by the shifts each person works per week. Keep a few cross-trained staff for cover.
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