Simple Online Tools

Model Train Scale Calculator

Planning your perfect model railway layout? Ensure everything is perfectly to scale! This tool helps you convert real-world object sizes into their miniature equivalents for various popular model train scales.

The most popular scale, offering a good balance of detail and space-saving.

Scaled Model Size

6.90 inches

For a real-world object of 50 feet in HO scale.

Understanding Model Train Scales

Model train scales represent the ratio of a model's size to the size of its real-world counterpart. For example, HO scale (1:87) means that every 87 feet in the real world is represented by 1 foot in the model. Understanding these ratios is fundamental for creating realistic and proportionate model railway layouts.

Different scales are popular for different reasons. Smaller scales like N and Z allow for more expansive layouts in limited spaces, while larger scales like O and G offer greater detail and are often used for outdoor garden railways.

Common Model Train Scales

ScaleRatioDescription
HO1:87The most popular scale, offering a good balance of detail and space-saving.
N1:160Smaller than HO, ideal for layouts where space is limited or for long mainline runs.
O1:48Larger and more detailed than HO, often used for outdoor garden railways.
G1:22.5The largest common scale, perfect for garden railways and highly detailed models.
Z1:220The smallest commercially available scale, allowing for expansive layouts in tiny spaces.

Whether you're a seasoned model railroader or just starting, this calculator helps you maintain accuracy and consistency in your miniature world. Happy modeling!