Short answer: Yes, for practical purposes—1:48 scale and O gauge are used interchangeably in the model train hobby.
The technical distinction:
| Term | What It Refers To |
|---|---|
| O Scale | The size ratio of models (1:48 in North America) |
| O Gauge | The track width (1.25 inches between rails) |
In everyday use, "O gauge" has become synonymous with 1:48 scale trains and accessories in North America. When you see our products labeled 1:48 or O Scale/O Gauge, they're designed to work with:
- Lionel trains and layouts
- MTH (Mike's Train House) products
- Williams trains
- Atlas O products
- Other O gauge accessories and scenery
Important Notes:
- Some O gauge trains (especially older or European models) may use slightly different proportions
- "O27" refers to trains designed for tighter 27-inch diameter curves—still compatible with 1:48 scale scenery
- True "scale" modelers aim for exact 1:48 proportions; "toy train" collectors may be more flexible
Our 1:48 scale building kits are designed to look realistic alongside standard O gauge trains and accessories.
Jan 13, 2026