Calculate your per-part cost accurately. Factor in material, machine time, labor, and mold amortization.
Part & Material Details
Weight of a single finished part
Cost of raw plastic material per kilogram
How many parts per mold cycle
Production Parameters
Time for one complete injection cycle
Cost to operate the injection molding machine
Total quantity of parts to produce
Advanced Cost Factors
One-time cost for mold creation
Total cycles before mold replacement
Cost for post-processing and handling
2%
Percentage of defective parts
25%
Your target profit percentage
Your Injection Molding Cost Analysis
Cost per Part
$0.00
Your total cost to manufacture one part
Selling Price per Part
$0.00
Recommended price including profit
Total Project Cost
$0.00
Total cost for 0 parts
Detailed Cost Breakdown
Material Cost: $0.00
Machine Cost: $0.00
Labor Cost: $0.00
Mold Amortization: $0.00
Cost Breakdown Visualization
Related Calculators
Frequently Asked Quentions
1. What factors most significantly affect injection molding costs?
The four major cost drivers are: material selection (40-60% of cost), cycle time efficiency, mold/tooling complexity, and production volume. Higher volumes typically reduce the per-part cost significantly due to mold amortization.
2. How is mold cost amortized in the calculation?
Mold cost is spread across the parts produced. If a mold costs $15,000 and lasts 1,000,000 cycles, the mold cost per part is $0.015. For smaller runs, the cost is spread across the actual production quantity.
3. What is a typical scrap rate in injection molding?
Scrap rates typically range from 1-5% depending on part complexity, material, and process control. Simple parts may see 1-2% scrap, while complex geometries with tight tolerances might reach 3-5%.
4. How does the number of cavities affect production cost?
More cavities reduce cost per part by producing multiple parts per cycle. However, they increase mold complexity and cost. The optimal cavity count balances tooling investment against production volume requirements.
5. What's included in the machine hourly rate?
The machine rate typically includes machine depreciation, maintenance, energy consumption, facility overhead, and basic operator attention. It ranges from $50-150/hour depending on machine size and location.
6. How accurate is this injection molding cost calculator?
This calculator provides professional-grade estimates accurate for quoting and budgeting purposes. For precise quotes, consult with manufacturing partners who can assess your specific part design, material selection, and quality requirements.
7. Can I use this calculator for different types of plastics?
Yes, simply adjust the material cost per kg input. Common material costs range from $2-4/kg for commodity plastics (PP, PE) to $5-15/kg for engineering grades (ABS, PC, Nylon).
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