Free plastics and 3D printing calculators

3D Printing, Moulding and Resin

These tools help before, during and after a print. Estimate print time from plastic volume, convert filament between grams and metres, calibrate the extruder with the e-steps calculator, or make a lithophane STL file from a photo. For moulding and casting, the clamping force calculator uses the projected area and the material, and the two epoxy calculators estimate how much to buy for a pour or a coated area.

Tools in this group

  • 3D Print Time Calculator — Estimate print time from the volume of plastic to extrude and your layer height, line width and print speed.
  • ABS vs PLA Comparison — Pick two filaments to compare ABS and PLA on strength, flexibility, durability, print temperature, bed temperature, density and difficulty.
  • ASA Filament: Settings and Comparison — See ASA filament print temperature, bed temperature and ratings next to ABS, PETG or any other filament in the list.
  • Clamping Force Calculator (Injection Moulding) — Enter the projected area of the part and runners with the material's clamp factor to get the press tonnage the mould needs.
  • Esteps Calculator (Extruder Calibration) — Mark the filament, extrude a set length, measure what is left, and get the corrected E-steps with the G-code to save them.
  • Epoxy Coverage Calculator — Enter the area and the coating thickness to get how much epoxy to buy, and how far a gallon or litre goes at that thickness.
  • Epoxy Resin Calculator — Enter the size and depth of your pour to get how much epoxy you need, split into resin and hardener by your mix ratio.
  • Filament Calculator (Length and Weight) — Convert filament grams to metres and back for your material and diameter, and work out how much is left on a spool.
  • Lithophane Maker (Photo to STL) — Pick a photo, set the size and thickness range, and download a watertight STL for your 3D printer. The photo never leaves your browser.
  • PETG Print Temp and Filament Temperature Chart — Pick a filament and type your nozzle temperature to see if it is inside the listed range, with the bed and chamber temperatures.
  • PETG vs PLA Comparison — Pick two filaments to compare PETG and PLA on strength, flexibility, durability, print temperature, bed temperature, density and difficulty.