Robotics & Automation calculator

Robot Pick Rate Calculator

Turn a timed pick cycle into the good picks per hour a robot sustains after stops and missed picks, and see how many robots a rate needs. You need the cycle, picks per cycle, availability, missed picks and target.

What this calculator does

  • Good picks per hour one robot sustains from its timed cycle, availability and missed picks, against the rate you need.

Formula used

  • Picks per hour at full cycle rate = 3,600 ÷ pick cycle time × picks per cycle
  • Cell efficiency = availability % × (100 − missed picks %) ÷ 100
  • Sustained good picks per hour = full-rate picks per hour × cell efficiency ÷ 100
  • Load = required ÷ sustained × 100; robots needed = CEILING(required ÷ sustained)
  • Longest cycle = 3,600 × picks per cycle × cell efficiency ÷ 100 ÷ required picks per hour

Inputs explained

  • Pick Cycle Time: One full pick-and-place cycle, timed on the robot or in simulation.
  • Picks per Cycle: Parts moved each cycle; more than one with a multi-pick gripper.
  • Availability: Run time ÷ planned time, from the cell's stop log.
  • Missed Picks: Missed, dropped or re-picked parts as a share of pick attempts.
  • Required Picks per Hour: Good picks per hour the line or order must get.

How to use the result

  • Best suited to sizing a picking cell against a line rate, checking a supplier's quoted cycle before purchase.
  • Stops too short for the stop log still cut the rate; time the cycle over a long run to include them. Vision retries that lengthen the cycle belong in pick cycle time, not in missed picks.

Current U.S. benchmarks

  • Global copper trades at $13,543 per tonne (IMF via FRED, Jul 2026), up 38.6% in a year, and U.S. industrial electricity averages 9.77 cents per kWh. Both feed electrified-hardware unit economics.

Common questions

  • Can I use the robot datasheet cycle time? No. Datasheet cycles use a standard test path, such as 0.36 sec for a 1 kg delta robot on the 25/305/25 mm cycle. The same datasheet says gripper activation and path change it, so time your own cycle.
  • Should starved infeed time count against availability? Yes, if the cell was scheduled to run. A robot waiting for parts makes none, and OEE counts all time the process was meant to run but did not as stop time.
  • Does a two-pick gripper double my pick rate? Only if the cycle time stays the same. A second pick usually adds a move and a grip, so time the two-pick cycle and enter it with picks per cycle set to 2.
  • Why not divide my logged picks by shift hours? That is a fair measured rate, but it cannot predict what a new cycle or gripper will do. Losses already inside a logged count must not be taken out again with an efficiency factor.

Last reviewed 2026-10-01.