1:500 Scale to 1:200 Scale Conversion
1:200 is the site model; 1:500 is the urban context model showing the surrounding blocks. Practices and students convert between them when a scheme designed at 1:200 needs a context model for a competition board, or when checking whether existing 1:500 massing blocks can sit around a more detailed 1:200 insert. At 2.5× apart, detail that reads at 1:200 — window mullions, balustrades — is deliberately omitted at 1:500, so converting is as much about deciding what to leave off as about resizing.
To convert a model dimension from 1:500 Scale to 1:200 Scale, multiply it by 2.5 (500 ÷ 200). The result is a larger model — every length, width, and height changes by the same factor.
Conversion Chart
| 1:500 Scale size (mm) | 1:200 Scale size (mm) |
|---|---|
| 1 mm | 2.50 mm |
| 2 mm | 5.00 mm |
| 5 mm | 12.50 mm |
| 10 mm | 25.00 mm |
| 20 mm | 50.00 mm |
| 50 mm | 125.00 mm |
| 100 mm | 250.00 mm |
Frequently Asked Questions
How do I convert 1:500 Scale to 1:200 Scale?
Multiply any 1:500 Scale model dimension by 2.5 to get the 1:200 Scale dimension. This works because 1:500 Scale is 1:500 and 1:200 Scale is 1:200, so the factor is 500 ÷ 200 = 2.5.
Is 1:200 Scale bigger or smaller than 1:500 Scale?
1:200 Scale models are larger: the same subject is 2.5× bigger in every dimension in 1:200 Scale than in 1:500 Scale.
Keep Exploring
Reverse: 1:200 Scale to 1:500 Scale · 1:500 Scale guide · 1:200 Scale guide · Full calculator