EDF Motor Size Calculator - 3D Printing Scale Tool

Kyle 26 January 2026

🛩️ EDF Motor Size Calculator

Calculate the percentage difference between EDF motor sizes to determine how much to scale your 3D printed RC airplane models when 3D printing.

📋 How to Use:

  1. From Size: Enter the original EDF motor size (e.g., 50mm)
  2. To Size: Enter the target EDF motor size (e.g., 64mm)
  3. Calculate: Get the scaling percentage needed
  4. Print: Scale your 3D model by this percentage

💡 Example:

50mm → 64mm = 128%
This means scale your 3D model to 128% of its original size to accommodate a 64mm EDF instead of a 50mm EDF.

🔧 Common EDF Motor Sizes:

Popular sizes: 30mm, 40mm, 50mm, 55mm, 64mm, 70mm, 80mm, 90mm, 105mm, 120mm

Choose the closest size to your available EDF motor and calculate the scaling needed.