Scale Comparison Calculator — Side by Side
Enter a real-world measurement and see the model size at every common scale, side by side. Great for choosing a scale for your next project.
Enter the real dimension in millimetres (e.g. 10m = 10000mm)
How We Calculate This
This calculator divides your real-world measurement by each standard scale factor to produce a comparison table.
Formula
Model size = Real size ÷ Scale factor (applied for each scale)
Example: A 10m (10,000mm) real length produces: 1:48 = 208mm, 1:72 = 139mm, 1:144 = 69mm, 1:350 = 28.6mm.
Frequently Asked Questions
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Last updated: February 2026
All calculations are estimates. Always verify quantities before purchasing materials.