28mm to 40mm Miniature Scale for 3D Printing
Convert 3D printed tabletop miniatures from 28mm to 40mm. This STL scale calculator is designed for Warhammer, D&D, and tabletop gaming miniatures.
Slicer Setting
Uniform scale (XYZ locked)
The math
(40.0mm / 28.0mm) × 100 = 142.9%
Based on 175cm human baseline, eye-level measurement (160cm).
Scale baselines
- Source eye level 28.0mm Eye
- Target eye level 40.0mm Eye
- Scale factor 142.9%
When you need this
You need this when bringing older or smaller 28mm models into a modern 40mm collection. This upscale is noticeable but manageable. Most painters bridge the gap with basing detail, posture adjustments, or custom base rims.
Source: 28mm
28mm is the heroic fantasy and historical wargaming standard. The classic tabletop standard. Measures to the eyes (160cm on a 175cm human), not the top of the head. Helmets, top-knots, and ornate headgear often add 2-4mm of perceived height. Common systems: Dungeons & Dragons, Pathfinder, Oldhammer.
Note: Older sculpts may be closer to 25mm true-scale. Always check the sculptor's baseline before scaling.
Target: 40mm
40mm is used by Star Wars: Shatterpoint, Inquisitor (GW specialist game), Heroic 40mm custom scenes. Used for centerpiece models, display dioramas, or games where individual heroes need to stand out. A 40mm figure has roughly twice the surface area of a 28mm model.
Note: 40mm bases can destabilize on uneven terrain. Consider magnetizing or weighting the base.
Print notes
Set your slicer to 142.9%. FDM works well at 40mm for monsters and vehicles with a 0.4mm nozzle.
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