Injection Molding Calculator

Calculate clamping force, shot size, cycle time, and part cost for plastic injection molding operations.

Part projected area on parting plane (including runner).
cm²
Average cavity pressure. PP: 30-60, ABS: 50-70, PC: 80-120 MPa.
MPa
Volume of one part.
cm³
PP: 0.9, ABS: 1.05, PC: 1.2 g/cm³.
g/cm³
Number of cavities in the mold.
Estimated total cycle time.
seconds

Results

Clamping Force-tonnes
Shot Size-cm³
Shot Weight-grams
Parts per Hour-
Part Weight-grams
References: Rosato — Injection Molding Handbook; SPI Standards