15mm to 28mm Conversion
To convert a model dimension from 15mm (1:100) to 28mm (1:56), multiply it by 1.7857 (100 ÷ 56). The result is a larger model — every length, width, and height changes by the same factor.
Conversion Chart
| 15mm size (mm) | 28mm size (mm) |
|---|---|
| 1 mm | 1.79 mm |
| 2 mm | 3.57 mm |
| 5 mm | 8.93 mm |
| 10 mm | 17.86 mm |
| 20 mm | 35.71 mm |
| 50 mm | 89.29 mm |
| 100 mm | 178.57 mm |
Frequently Asked Questions
How do I convert 15mm to 28mm?
Multiply any 15mm model dimension by 1.7857 to get the 28mm dimension. This works because 15mm is 1:100 and 28mm is 1:56, so the factor is 100 ÷ 56 = 1.7857.
Is 28mm bigger or smaller than 15mm?
28mm models are larger: the same subject is 1.7857× bigger in every dimension in 28mm than in 15mm.
Keep Exploring
Reverse: 28mm to 15mm · 15mm (1:100) guide · 28mm (1:56) guide · Full calculator