Injection Molding worked example

Injection Machine Hour Rate with total annual machine costs of 90,000 $/year: a worked example

Here is what the math looks like when conditions slip. We hold every other input steady and drop total annual machine costs to 90,000 $/year, then walk the calculation through step by step. Calculate the fully loaded hourly rate for an injection molding press including depreciation, utilities, maintenance, and overhead.

The inputs for this scenario

  • Total annual machine costs: 90,000 $/year (the input this scenario stresses; the baseline uses 180,000)
  • Available production hours per year: 6,000 hrs/year (held at the documented default)
  • Overhead allocation multiplier: 1.25 x (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Machine hour rate = (Annual costs / Available hours) x Overhead multiplier.
  • Result works out to 675,000,000 $/hr at these inputs, and this is the headline figure for the scenario.
  • Base rate (costs / hours) works out to 675,000,000 value at these inputs.
  • Multiplier works out to 1 x at these inputs.
  • Factor A x B works out to 540,000,000 value at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where total annual machine costs sits at 180,000 $/year and the headline result is 1,350,000,000 $/hr, this scenario comes in 50% below the baseline at 675,000,000 $/hr.
  • The practical read: the gap between this scenario and the baseline is entirely attributable to total annual machine costs, so recovering it is worth quantifying in dollars before considering equipment or staffing changes. It assumes the press runs at the budgeted utilization; if actual uptime falls well below available hours, the true cost per running hour is higher than the figure shown.

Results at a glance

  • Result: 675,000,000 $/hr (headline result)
  • Base rate (costs / hours): 675,000,000 value
  • Multiplier: 1 x
  • Factor A x B: 540,000,000 value

Run it with your numbers

  • To rerun this with your own numbers, open the live Injection Machine Hour Rate calculator, set total annual machine costs to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.