Injection Molding calculator

Molded Part Cost Calculator

Estimate molded part cost from quantity, resin and cycle cost, setup, and overhead. Add quantity, variable cost, labor, and burden to see total cost and cost per piece in one place.

What this calculator does

  • Estimate molded part cost from quantity, resin and cycle cost, setup, and overhead.
  • Use it when molded part cost in injection molding is being quoted and you need a number you can defend on a phone call.
  • Turns molded part cost quantity, variable molded part cost, fixed molded part cost into a total cost for molded part cost in injection molding.

Formula used

  • Total molded part cost = molded part cost quantity × variable molded part cost + fixed molded part cost + labor and overhead adder
  • Cost per unit = total molded part cost ÷ molded part cost quantity

Inputs explained

  • Molded part cost quantity: Enter the units, parts, kits, assemblies, or jobs covered by the quote or production run.
  • Variable molded part cost: Use the per-unit material, labor, test, service, or supplier cost from the BOM, quote, ERP, or cost model.
  • Fixed molded part cost: Add setup, tooling, freight, engineering, inspection, or other fixed cost assigned to this calculation.
  • Labor and overhead adder: Include labor, burden, handling, testing, or support cost not already captured in the variable cost.

How to use the result

  • Use it when molded part cost in injection molding needs a fast quote build-up.
  • Tariffs, freight, and packaging are not modeled. Add them as a fixed adder if they apply.

Common questions

  • What problem does this molded part cost calculator solve? Estimate molded part cost from quantity, resin and cycle cost, setup, and overhead. You get a total cost you can defend before quoting, scheduling, or sign-off.
  • Where do I get the inputs for this injection molding calculator? molded part cost quantity, variable molded part cost, fixed molded part cost usually move the total cost most. Pull from measured injection molding runs, supplier data, and recent quotes rather than memory.
  • How should I act on the output? Use the cost per piece as the floor of the quote, then layer in margin for injection molding risk.
  • What should I double-check before acting? Confirm scrap and yield are reflected in variable cost; missing scrap is the usual reason a quote bleeds.

Last reviewed 2026-05-12.