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Calcimator

AGV Path Planning Calculator

Automated guided vehicle fleet sizing from throughput.

About this calculator

Sizing an AGV (automated guided vehicle) fleet starts with one question: how many loads can a single vehicle move per hour, and how many vehicles does it take to hit the throughput your operation needs. A single AGV's trip time is the round trip travel time (there and back, which is why this calculator doubles the one-way distance) plus the time spent loading and unloading at each end -- both legs of the load/unload time are counted because a real AGV mission picks up material at one end of the trip and sets it down at the other. Utilization derates that raw trip capacity to account for real-world losses that a pure travel-time calculation misses -- waiting for a path to clear, minor routing conflicts with other AGVs, and normal operational friction -- so the number of AGVs this calculator recommends already builds in some slack rather than assuming every vehicle runs at theoretical maximum capacity every hour.

Because AGV requirements are always rounded up to a whole vehicle, the fleet's actual capacity (shown as fleet capacity) is typically somewhat higher than the throughput you asked for -- you can't deploy a fractional AGV, so the last vehicle in the fleet usually carries some spare capacity. Charging spares are a separate allowance on top of the vehicles doing active work, reflecting that a real AGV fleet needs some vehicles cycling through charging at any given time rather than running every unit continuously.

Inputs

ft

Results

AGVs required

4

Trips/hr/AGV7.85
Trip time (sec)390
Fleet capacity (loads/hr)31.38
Charging spares1
How to Use This Calculator
  1. Enter the required loads/hr throughput — the number of material movements needed per hour.
  2. Set the average trip distance (ft) — the one-way travel distance per mission.
  3. Enter the AGV speed (ft/min) from the vehicle specification sheet.
  4. Input the load/unload time (sec) for each pick-and-place operation.
  5. Set utilization (0.5–0.95) accounting for charging, waiting, and path conflicts.
  6. Review AGVs required and Charging spares to size your fleet and charging infrastructure.

How the result changes with Required loads/hr

Required loads/hrAGVs required
152
233
456
7510

What each input means

Required loads/hr
Required material movements per hour.
Avg trip distance (ft)
Average one-way travel distance.
AGV speed (ft/min)
AGV travel speed in feet per minute.
Load/unload time (sec)
Time per load or unload operation.
Utilization (0.5-0.95)
Expected AGV utilization rate.

What each result means

AGVs required
Number of AGVs needed to meet throughput.
Trips/hr/AGV
Capacity of each AGV per hour.
Trip time (sec)
Total round-trip cycle time.
Fleet capacity (loads/hr)
Total fleet throughput capacity.
Charging spares
Additional AGVs for charging rotation.

How this is calculated

Worked example, using the default values

  1. Identify Input Parameters
    5 parameters
    Required loads/hr = 30, Avg trip distance (ft) = 500, AGV speed (ft/min) = 200, Load/unload time (sec) = 45, Utilization = 0.85 = 5 input(s) provided
  2. Calculate AGVs required
    AGVs required = ceil(loadsPerHour / tripsPerHourPerAGV)
    4 = 4
  3. Calculate Trips/hr/AGV
    Trips/hr/AGV = (3600 / totalTripTimeSec) * utilization
    7.85 = 7.85
  4. Calculate Trip time
    Trip time = travelTimeSec + loadUnloadTimeSec * 2
    390 = 390

Engine last updated . Checked against 3 independently-derived tests — how we verify calculators. Built by Paul Gunder, a software engineer, not a licensed financial, medical, or legal professional.

Frequently Asked Questions

Why is trip distance doubled in the travel time calculation?

An AGV mission is a round trip -- it travels from its pickup point to its destination and, in a typical dedicated-route setup, back again before starting the next load -- so this calculator doubles the one-way trip distance you enter to capture the full travel distance per cycle. If your actual AGV path only travels one way per load (with a different vehicle handling the return leg), halve your entered distance before using this calculator.

Why does utilization reduce the number of trips an AGV can complete, when it isn't a physical distance or time input?

Utilization represents real-world losses that a pure travel-time calculation can't capture on its own -- waiting for a path to clear, minor conflicts with other AGVs sharing the same routes, and normal operational friction. Applying it as a multiplier on trips-per-hour derates the AGV's theoretical maximum capacity down to a more realistic sustained throughput, which is why a lower utilization value increases the number of AGVs this calculator recommends for the same required throughput.

Why does the calculated fleet capacity usually exceed the loads/hr I entered?

The number of AGVs required is always rounded up to a whole vehicle, since a fleet can't include a fractional AGV. That rounding means the fleet's actual combined capacity, calculated from the rounded-up vehicle count, is typically somewhat higher than the bare minimum throughput you asked for -- the last AGV added to hit your requirement usually carries some spare capacity rather than landing exactly on your target.

Does the required loads/hr throughput change how long a single AGV's trip takes?

No -- a single AGV's round-trip time is determined entirely by travel distance, AGV speed, and load/unload time, none of which depend on how many loads per hour the overall operation needs to move. Required throughput only affects how many AGVs the calculator recommends deploying to collectively meet that throughput, not how long any individual AGV's own trip cycle takes.

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