Model Train Scale Converter (HO, N, O)
Convert real railroad dimensions to model scale sizes. Perfect for HO, N, and O scale layouts.
Enter dimension in real feet
What is the most popular model train scale?
HO scale (1:87) is the most popular worldwide, followed by N scale (1:160) for tight spaces. G scale (1:22.5) is popular for garden railways outdoors. O scale (1:48) dominates in the US and UK. The number represents ratio: 1 inch on model equals that many inches in real life.
How do I convert real railroad dimensions to model?
Formula: Model Dimension = Real Dimension / Scale Ratio. Example: Real boxcar 40 feet in HO (1:87) = 40/87 = 0.46 inches or about 7/16 inch. Most manufacturers publish full dimension kits - this calculator helps plan layouts and scenes. Track curves are standardized: HO radii of 18, 22, 24 inches correspond to prototypical 800, 1000, 1100 foot curves.
Can I run different scales on the same layout?
Commonly yes for "toy train" layouts but not model railroad精度. Finescale requires consistency. If mixing, choose compatible scales (HO/TT or N/Z) to avoid unrealistic size differences. "Cn" symbol means "cameo" no details - not to scale. Standards for structures: model should match track - a correctly-sized building on N track is HO-sized next to N cars.
What is code rail mean?
Code numbers like code 100 or code 83 refer to rail height in thousandths of an inch. Code 100 is standard for HO. Lower code numbers are more realistic but require matching wheels. Use Code 83 for display, Code 100 for operations. Match wheel to rail type.