3D Print Scaling Calculator
Calculate scaling factors to compensate for material shrinkage and achieve accurate dimensions
About this calculator
The 3D Print Scaling Calculator helps determine the optimal scaling factors needed to compensate for material shrinkage during 3D printing. When plastics cool after printing, they naturally contract, causing finished parts to be smaller than intended. This calculator analyzes your desired final dimensions against typical material shrinkage rates to calculate precise scaling percentages. By applying these scaling factors to your 3D model before printing, you can achieve accurate final dimensions and reduce the need for reprints, saving both time and material costs.
How to use
Enter your desired final dimensions and select your printing material type. The calculator will determine the appropriate scaling percentage based on typical shrinkage rates for that material. Apply this scaling factor to your 3D model in your slicing software before printing to compensate for expected material contraction.
Frequently asked questions
Which materials have the most shrinkage?
ABS typically shrinks 0.7-0.8%, while PLA shrinks only 0.2-0.4%. Nylon and PETG fall between these ranges at approximately 0.5-0.6%.
Do I need to scale all three dimensions equally?
Usually yes, but some materials may shrink differently along different axes. The calculator provides uniform scaling, but you can adjust individual dimensions if needed.
How accurate will my prints be after scaling?
Proper scaling typically achieves dimensional accuracy within ±0.1-0.2mm for most desktop 3D printers, significantly improving fit and function of printed parts.