MedTech Manufacturing worked example

Cleanroom Cost Per Part with total cleanroom operating cost of 22,500 $: a worked example

Here is what the math looks like when conditions slip. We hold every other input steady and drop total cleanroom operating cost to 22,500 $, then walk the calculation through step by step. Allocate total cleanroom operating cost (HVAC, filtration, monitoring, maintenance) across parts produced in that cleanroom.

The inputs for this scenario

  • Total cleanroom operating cost (period): 22,500 $ (the input this scenario stresses; the baseline uses 45,000)
  • Parts produced in cleanroom (period): 12,000 devices (held at the documented default)
  • Allocation adjustment factor: 1 x (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Cleanroom cost per part ratio = total cleanroom operating cost รท total parts produced in cleanroom.
  • Cleanroom cost per part works out to 1.88 $ / part at these inputs, and this is the headline figure for the scenario.
  • Raw ratio works out to 1.88 value at these inputs.
  • Conversion factor works out to 1 x at these inputs.
  • Total parts produced works out to 12,000 value at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where total cleanroom operating cost sits at 45,000 $ and the headline result is 3.75 $ / part, this scenario comes in 50% below the baseline at 1.88 $ / part.
  • The practical read: the gap between this scenario and the baseline is entirely attributable to total cleanroom operating cost, so recovering it is worth quantifying in dollars before considering equipment or staffing changes. It assumes parts consume cleanroom resources equally; a part needing twice the dwell time or floor area is undercharged unless you reflect that in the allocation factor.

Results at a glance

  • Cleanroom cost per part: 1.88 $ / part (headline result)
  • Raw ratio: 1.88 value
  • Conversion factor: 1 x
  • Total parts produced: 12,000 value

Run it with your numbers

  • To rerun this with your own numbers, open the live Cleanroom Cost Per Part calculator, set total cleanroom operating cost to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.