Additive Manufacturing calculator

Infill Material Calculator

Infill settings strongly affect FDM material use, print weight, stiffness, and cost. This calculator estimates grams of infill material from part volume, infill percentage, density, and a pattern or wall interaction multiplier.

What this calculator does

  • Estimate FDM infill material from solid part volume, infill percentage, material density, and pattern multiplier.
  • a designer or FDM estimator needs to compare infill settings before slicing or quoting a part
  • Returns estimated grams of material used by the infill portion of an FDM part.

Formula used

  • Base infill material = internal part volume × infill percentage × material density
  • Estimated infill material = base material × pattern multiplier

Inputs explained

  • Internal part volume: undefined
  • Infill percentage: undefined
  • Material density: undefined
  • Pattern multiplier: undefined

How to use the result

  • Use it to compare infill percentages, material densities, and pattern choices before final slicing.
  • It does not include walls, top/bottom skins, supports, purge, brim, or exact slicer path behavior.

Common questions

  • Should infill percentage be entered as 35 or 0.35? Enter percent as shown in the field, such as 35 for 35 percent.
  • What is pattern multiplier? Use it for gyroid, grid, honeycomb, overlap, or slicer behavior that makes actual infill differ from simple percentage.
  • Does this calculate part strength? No. Strength depends on material, walls, raster direction, layer adhesion, and load case.
  • How do I use the result? Compare material impact before choosing infill for cost, weight, and print-time tradeoffs.

Last reviewed 2026-05-12.