About the Warehouse Labor Calculator
This warehouse labor calculator turns your daily volume into a staffing plan. Enter how many orders you ship per day, the average lines and units per order, and the productivity of each function — pick lines per hour, packed orders per hour and received units per hour. It converts the workload into labor hours, allows for breaks, travel to and from the floor, meetings and other non-productive time through a utilization factor, and rounds up to the number of people needed on each shift.
It is built for warehouse and fulfillment managers, 3PL operators, e-commerce founders planning peak season, and analysts building a labor budget. The results also show daily labor cost, labor cost per order and overall units per labor hour, the figures most often used to benchmark a distribution center or price fulfillment services.
Use engineered or measured rates from your own operation where possible; pick rates vary enormously with the method (discrete, batch or zone picking), storage type, order profile and automation. Headcount is rounded up per function and per shift, so the plan is a minimum before absenteeism and cross-training are considered.
With the default inputs, the total associates needed per day is 13. Change any value above to recalculate instantly.
How to use the warehouse labor calculator
- 1Enter orders per day, lines per order and units per line.
- 2Enter your measured pick, pack and receiving rates.
- 3Set the number of shifts, paid hours per shift and utilization.
- 4Add the hourly wage and benefits burden.
- 5Read headcount by function, cost per order and units per labor hour, then test peak volumes.
Formula and method
Daily workload for each function is volume divided by productivity: order lines divided by lines picked per hour, orders divided by orders packed per hour, and units received divided by units put away per hour. Each associate contributes their paid shift hours multiplied by the productive utilization factor, which accounts for breaks, start-up meetings, travel, cleaning and other indirect time.
The number of people per shift for each function is that function’s hours per shift divided by productive hours per person, rounded up. Daily labor cost is total scheduled people × paid shift hours × wage × (1 + burden). Cost per order divides that by orders shipped, and units per labor hour divides units shipped by total paid hours.
- pick rate
- Order lines picked per productive hour
- pack rate
- Orders packed per productive hour
- utilization
- Share of paid time spent on direct work
Worked examples
E-commerce DC shipping 1,200 orders a day on one shift
1,200 orders × 2.5 lines = 3,000 lines, or 30 hours of picking at 100 lines/h; packing takes 40 hours and receiving 12. Each person gives 8 × 85% = 6.8 productive hours, so you need 5 pickers, 6 packers and 2 receivers — 13 people. At $19 plus 25% burden that is $2,470 a day, about $2.06 per order.
Peak season: 3,000 orders over two shifts
Picking 7,500 lines takes 75 hours (37.5 per shift → 6 pickers), packing 3,000 orders 100 hours (50 per shift → 8 packers) and receiving 6,000 units 24 hours (12 per shift → 2 receivers). That is 16 people per shift, 32 a day, costing $6,080, or about $2.03 per order.
Frequently asked questions
How do I calculate how many warehouse workers I need?+
For each function divide daily volume by the hourly productivity rate to get labor hours, then divide by the productive hours one person works per shift (paid hours × utilization) and round up. Add the functions together and multiply by the number of shifts.
What is a good pick rate in a warehouse?+
It depends on the picking method and product. Manual discrete picking with carts is commonly in the range of about 60–120 lines per hour, batch and zone picking higher, and goods-to-person automation can reach several hundred. Measure your own rate over full shifts.
What utilization should I assume for warehouse labor?+
Planners often use roughly 80–90% of paid time as productive, after breaks, start-up huddles, travel to the work area, cleaning and system downtime. If your rates are already measured over whole shifts including those losses, use a higher utilization.
What is units per hour (UPH) in a warehouse?+
Units per hour is total units processed divided by labor hours. Here it is units shipped divided by all paid hours scheduled for picking, packing and receiving, which gives an overall productivity benchmark for the building.
How much does warehouse labor cost per order?+
Divide total daily labor cost (people × hours × loaded wage) by orders shipped. It is often one of the largest parts of fulfillment cost and falls as lines per order and automation rise, or as order volume lets you staff more efficiently.
Results are estimates for educational purposes and are not financial advice. Rates, fees and terms vary — confirm with your lender or a licensed advisor before making decisions.