How to Calculate Injection Mould Cost per Cavity?

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In the field of injection molding, the mold cost per cavity is a core metric that determines project economics. Many companies opt for multi-cavity molds (ranging from 2 to 128 cavities or even more) to increase production capacity, but they must first accurately calculate the “cost per cavity” to enable scientific quoting and optimized design.

Breakdown of Total Injection Mold Cost
Injection mold costs primarily consist of explicit costs:

  • Material cost (mold base + cavity steel): 15%–30%
  • Machining cost (CNC, EDM, polishing): 20%–30%
  • Design cost: 10%–15%
  • Mold trial and testing cost: 3%–5%
  • Packaging, transportation, taxes, and profit: the remaining portion

Total Mold Cost = Material Cost + Design Cost + Machining Cost + Mold Trial Cost + Packaging & Transportation Cost + Tax + Profit

Advantages of Multi-Cavity Molds
Single-cavity molds are simpler to machine but result in higher per-part costs. Multi-cavity molds, while more expensive overall, significantly reduce the cost per cavity, making them ideal for high-volume production such as automotive parts, packaging containers, and electronic housings. When combined with stack molds, production capacity can be further doubled.

Accurately calculating the injection mold cost per cavity enables companies to reduce per-part production expenses by 30%–50%.

If you are planning an injection molding project, feel free to contact us at ATC-Mould! We offer free mold solution design and precise quoting—from single-cavity to high-precision multi-cavity molds. Our one-stop service helps you achieve optimal cost efficiency and maximum production capacity.