Material Calculator — Plastic

Weight per metre, weight per bar, and total weight for engineering plastics. Covers round bar, polygon, flat, plate and sheet, and tube profiles across a comprehensive range of plastic materials. Shows the round bar size you need to machine non-round shapes.

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Material Calculator Plastic - round bar calculation in PAI
Section Profiles

Five profile types, one click to switch

Tabbed screens for every common plastic bar and sheet profile. Enter dimensions in millimetres, get instant weight calculations.

Changing material type

Comprehensive plastic materials

Switch between materials from the menu and the density updates automatically. The range covers the engineering plastics you actually work with:

  • Nylon 6, Nylon 66 — general engineering
  • Acetal (POM/Delrin) — precision components
  • PTFE — chemical resistance
  • Polycarbonate — impact resistance
  • Acrylic (PMMA) — optical clarity
  • PAI (Torlon) — high-performance
  • And many more
Hexagon in Nylon 6 showing round bar machining size

Machining bar sizes

For non-round profiles — hexagon, flat, plate — the calculator shows the round bar diameter you would need to machine the shape from. This tells you what stock to order when the finished profile isn’t available as standard.

A practical feature that saves a separate calculation and prevents ordering the wrong stock size.

Metric Imperial Conversion

Metric-imperial conversion

Built-in converter for length, weight and temperature. Useful when working with material from international suppliers or quoting for export projects where imperial dimensions are still standard.

6
Calculation tabs
20+
Plastic materials
Instant
Results
M/I
Conversion built in

Accurate plastic weights in seconds

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