Machine sizing
Clamp Tonnage Calculator
Estimate injection molding clamp force from projected area and cavity pressure.
Calculator category
Injection molding calculators for real shop questions
Begin with machine sizing and process estimates, then connect results to material, output, and cost planning.
Machine sizing
Shot Size Calculator
Calculate injection molding shot weight including cavities, runner, and cushion.
Machine sizing
Shot Volume Calculator
Convert injection molding shot weight to melt volume.
Machine sizing
Projected Area Calculator
Estimate total projected area for an injection mold.
Process
Injection Molding Cycle Time Calculator
Calculate total cycle time and cooling share.
Process
Cooling Time Calculator
Estimate cooling time using a flat-wall heat-transfer model.
Production
Parts Per Hour Calculator
Calculate injection molding production output from cycle time.
Mold planning
Cavity Count Calculator
Estimate a minimum cavity count from demand and available time.
Mold planning
Mold Shrinkage Calculator
Calculate nominal cavity size from part dimension and linear shrinkage.
Materials
Resin Weight Calculator
Calculate resin mass from volume, density, and cavities.
Costing
Material Cost Per Part Calculator
Estimate resin material cost per molded part.
Quality
Scrap Rate Calculator
Calculate manufacturing scrap rate and yield.
Production
Machine Utilization Calculator
Calculate time-based injection molding machine utilization.
Costing
Mold Amortization Calculator
Calculate tooling and maintenance cost allocated to each part.
A practical injection molding sequence
- Use CAD or drawing data to establish projected area and complete shot.
- Screen clamp force and injection-unit suitability.
- Estimate cooling and total cycle before committing to output.
- Turn output into cavity, material, scrap, and tooling-cost scenarios.
Before using a result
Check the input definition against the actual mold: cavity count, runner system, material grade, mold temperature, automation, and planned downtime can all change the answer. See the guides for pressure, cooling, shot-capacity, and cost context.