Foundry & Forging calculator

Die Changeover Cost and Time Calculator

Separate press time consumed by die changes from the cost allocated to one job. Enter event count, stop minutes, allocated minutes, the documented hourly rate and additional tooling cost.

What this calculator does

  • Allocate recorded die-changeover time to a job and estimate its cost using your documented hourly rate.

Formula used

  • Press hours consumed = events × stop minutes per event ÷ 60
  • Allocated hours = events × job-allocated minutes per event ÷ 60
  • Allocated time cost = allocated hours × stopped-hour rate
  • Total allocated cost = allocated time cost + additional fixed setup cost
  • Cost per event = total allocated cost ÷ events

Inputs explained

  • Changeover Events: Count of completed or planned die changes.
  • Press Stop per Changeover: Recorded press stop duration from the changeover log.
  • Job-Allocated Stop per Changeover: Portion of each recorded stop charged to this job.
  • Allocated Cost per Stopped Hour: Documented machine-hour allocation rate for the selected cost scope.
  • Additional Fixed Setup Cost: Job-specific tooling cost excluded from the hourly allocation.

How to use the result

  • Best suited to die-change time review, job setup cost allocation.
  • Lost sales, contribution margin and avoided cash expense are not calculated. A mean event duration can conceal long individual changeovers.

Current U.S. benchmarks

  • The producer price index for steel mill products stands at 381.162 (BLS, Aug 2026), up 23.4% from a year earlier. Quotes priced off last quarter's material cost miss this move.
  • The U.S. has 3,569 primary metal manufacturing establishments employing about 354,911 workers (Census County Business Patterns, 2023).

Common questions

  • Is the result lost profit? No. It is a time-based cost allocation plus the separately entered tooling expense.
  • Why enter allocated minutes instead of a percentage? Allocated minutes can be reconciled with the changeover log. Their share of the total stop is calculated for you.
  • Can allocation exceed the recorded stop? No. More than the recorded stop would assign hours this changeover did not consume.
  • What remains when there are no changeovers? The fixed setup cost remains measurable, while cost per event is blank because no event exists.

Last reviewed 2026-10-06.