01 · Calculator
Door Count In.
Shift Capacity Out.
Dock performance problems often show up before execution starts. If the staffed doors, cycle times, and expected gaps cannot support the truck plan, the shift is already overloaded before the first trailer backs in.
Inputs
Model a shift
Start with the staffed doors you can actually run, then add realistic cycle and gap assumptions. The output shows practical shift capacity, not theoretical door count with no friction.
Results
Estimated shift throughput
This estimate turns door staffing and cycle assumptions into a practical truck-throughput number. It is best used for schedule planning, not post-facto labor blame.
Shift truck capacity
34
Expected trucks completed this shift
Turns per door
5.7
Per staffed door at the selected utilization target
Trucks per hour
3.4
Across the full staffed-door set
Door cycle assumption
90 min
Average turn time plus schedule/reset gap per truck.
Raw theoretical turns / door
6.7
Before applying the utilization target that accounts for real operating friction.
Planned schedule impact
This plan is short by about 2 trucks against the target throughput.
Door hours needed for plan
63.5 productive door-hours are required to hit the planned truck count at the selected assumptions.
Planned utilization
106% of the modeled shift capacity is already consumed by the planned trucks.
Important note
This estimate assumes a stable average cycle and gap. Product mix, labor swings, late arrivals, staged freight readiness, and equipment shortages can all reduce real throughput below the modeled number.
02 · Method
The Model Uses
Cycle Time and Door Utilization
The calculator starts with shift minutes per door, divides by the full truck cycle including schedule/reset gap, then reduces the result by the target utilization to avoid pretending docks are productive every minute of the shift.
Use Full Cycle Time
Throughput depends on more than touch time. Include staging, release, reset, and dock turnover friction in the effective truck cycle.
Reduce for Real Utilization
A realistic utilization target keeps the math honest. Running every staffed door at 100% all shift usually means the plan is too tight.
Compare Against the Plan
Once shift capacity is estimated, compare it with planned truck count to see if the schedule fits the labor and doors you actually have.
03 · Use Cases
Useful for Planning,
Laboring, and Slot Design
This tool is for pre-shift operational decisions where you need a fast answer about what the dock can realistically absorb.
Appointment Capacity Checks
Stress-test the appointment count against actual staffed doors before opening more slots or pushing overtime into the shift.
Labor Planning
See whether adding a staffed door changes throughput enough to justify the labor, or whether cycle time and gap reduction will move the needle more.
Schedule Recovery
When the day is already overloaded, use the model to understand how far over plan the schedule is and where the likely backlog starts building.
Need Another
Dock Tool?
The tools library is growing around real dock, yard, and freight planning questions. If you want another capacity or schedule calculator here, send it over.