Math Basics
Concepts and technical calculators for injection molding
Measurement of the distance between two points in one dimension. In injection molding it is used for part dimensions, screw travel, and mold measurements. Common instruments include rules, tape measures, and laser equipment.
Key formulas
P_rect = 2 × (a + b)C = 2π × r1 in = 25.4 mm
Metric System (SI)
mm, cm, m, km
Imperial System
in, ft, yd, mi
Calculator
Length Converter
1 in = 25.4 mm | 1 m = 1000 mm | 1 cm = 10 mm
mm
cm
m
in
Rectangle Perimeter
P = 2 × (a + b)
mm
mm
Perimeter
— mm