What does the allocation factor adjust for?

Differences in cleanroom resource use between part families. A factor of 0.7 charges this family 70% of the average cost per part, while 1.2 charges 20% more. The weighted average across families should stay near 1.

Why show cost at 10% lower volume?

It shows how a fixed cleanroom cost behaves when output falls. Volume drops 10% while the period cost holds, so each remaining part absorbs more of it. That swing is the volume risk a forecast carries into unit cost.

Which costs belong in the period cleanroom cost?

The costs of running the classified space for the period: air handling and filtration, environmental monitoring, cleaning and disinfection, maintenance, and gowning supplies consumed. Direct material and labor belong in the product cost, not here.

Is this cost per good part or per part started?

Per good part. Enter the devices released from the cleanroom in the period. Scrapped parts never carry sellable unit cost, so counting them would understate the cleanroom burden on each device you sell.

MedTech Manufacturing calculator

Cleanroom Cost per Part Calculator

Find what share of cleanroom operating cost each part carries and how quickly that share moves when volume changes. Enter the period cost, the parts released and an allocation factor for this part family.

What this calculator does

Cleanroom operating cost spread across the parts made in the period, with an allocation factor and a volume sensitivity.

Formula used

Base cost per part = period cleanroom cost ÷ parts produced
Allocated cost per part = base cost per part × allocation factor
Cost at 10% lower volume = period cost ÷ (parts × 0.9) × allocation factor

Inputs explained

Period Cleanroom Cost: Operating cost for the period: air handling, filtration, monitoring and cleaning.
Parts Produced: Good devices released from the cleanroom during the same period.
Allocation Factor: Multiplier for the share of cleanroom resources this part family uses.

How to use the result

Best suited to standard costing a cleanroom part family, testing unit cost at lower volume.
A single allocation factor cannot capture differences in dwell time, floor area and gowning entries at once. Excludes cleanroom cost already carried in material and direct labor standards.

Current U.S. benchmarks

U.S. manufacturing runs at 75.7% of capacity with new factory orders at $663B per month (Federal Reserve and Census, Aug 2026).
The U.S. has 8,825 medical equipment and supplies establishments employing about 308,388 workers (Census County Business Patterns, 2023).

Common questions

What does the allocation factor adjust for? Differences in cleanroom resource use between part families. A factor of 0.7 charges this family 70% of the average cost per part, while 1.2 charges 20% more. The weighted average across families should stay near 1.
Why show cost at 10% lower volume? It shows how a fixed cleanroom cost behaves when output falls. Volume drops 10% while the period cost holds, so each remaining part absorbs more of it. That swing is the volume risk a forecast carries into unit cost.
Which costs belong in the period cleanroom cost? The costs of running the classified space for the period: air handling and filtration, environmental monitoring, cleaning and disinfection, maintenance, and gowning supplies consumed. Direct material and labor belong in the product cost, not here.
Is this cost per good part or per part started? Per good part. Enter the devices released from the cleanroom in the period. Scrapped parts never carry sellable unit cost, so counting them would understate the cleanroom burden on each device you sell.

Last reviewed 2026-10-01.