HO scale model trains are the most popular scale in model railroading, built to a 1:87 ratio that balances realistic detail with a space-efficient size. Known for smooth operation and wide availability, HO scale locomotives and rolling stock are used by beginners and experienced model railroaders alike. Explore our selection of HO scale train sets and HO scale train parts for building, upgrading, and maintaining your layout.
HO scale also includes narrow gauge variations like HOn3 and HOn30, which run on smaller track and allow for tighter curves and compact layouts. These models are often used to recreate mountain railroads, logging lines, and industrial operations where space and terrain play a major role.
Browse HO scale trains from leading manufacturers including Atlas, Athearn, Bachmann, and Walthers.
HO scale model trains are built to a 1:87 ratio and have become the most widely used scale in model railroading. They strike a balance between size, detail, and layout flexibility, making them a practical choice for everything from small home layouts to large, highly detailed railroad systems.
Because HO scale offers a wide selection of locomotives, rolling stock, track, and scenery, it is often the scale hobbyists stay with long-term. It allows for realistic operation without requiring the space needed for larger scales.
HO scale trains cover everything from steam locomotives and transition-era diesels to modern freight and passenger equipment. Most layouts are built around a mix of locomotives and rolling stock such as boxcars, tank cars, hoppers, intermodal equipment, passenger cars, and operating cars designed for interactive layouts.
Many modelers start with a train set, then expand by adding locomotives and building realistic consists based on a specific railroad or era. Switching layouts, yard operations, and mainline running are all common in HO scale.
Track is one of the most important parts of any HO scale layout. Most hobbyists use either sectional track for easy setup or flex track for more realistic curves and custom layouts. Flex track is especially popular for permanent layouts because it allows smoother transitions and more natural track geometry.
Popular HO scale track systems include Atlas Code 83 and Code 100 track, Kato Unitrack for reliable snap-together layouts, and Bachmann EZ Track for beginners. Turnouts, crossings, and yard ladders are used to create switching areas and more complex railroad operations.
Scenery is what turns a train layout into a model railroad. HO scale makes it possible to add detailed buildings, industries, roads, bridges, and terrain features without taking up excessive space.
Common scenery elements include trees, grass, ballast, mountains, and water features. Structures such as depots, factories, and warehouses help define the purpose of a layout, while details like vehicles and street scenes add realism.
HO scale is known for its ability to support fine details. Figures, signals, crossing gates, lighting, and animated accessories are often used to add activity and realism to a layout.
Many hobbyists incorporate people, vehicles, and small details to create scenes that reflect real-world railroads. These elements help bring layouts to life and make them more engaging to operate and display.
HO scale trains can be operated using traditional DC power or more advanced DCC systems. DC controls the entire track at once, while DCC allows multiple locomotives to run independently on the same layout.
Modern HO locomotives are often DCC-ready or include factory-installed sound decoders, allowing for realistic horn, bell, and engine sounds along with improved control.
HO scale has a strong secondary market, with many hobbyists seeking discontinued models, limited runs, new old stock (NOS), and hard-to-find items. Preowned trains are often used to expand layouts or find specific road names that are no longer in production.
Because HO scale has been around for decades, there is a wide variety of older equipment still in use today.
Many HO scale hobbyists eventually look to sell part of their collection, whether it's extra locomotives, rolling stock, or complete layouts. Preowned HO scale trains, especially from well-known brands or discontinued production runs, are actively bought and sold within the model railroading community.
Trainz buys HO scale train collections. This includes locomotives, freight cars, passenger cars, accessories, and other model railroad equipment. If you're wondering where to sell model trains or how to sell an HO train collection, Trainz offers a straightforward process to help you get started.
You can learn more about how to sell your HO scale trains by visiting Sell My Trains – How It Works.
HO scale refers to a 1:87 ratio, meaning the model is 1/87th the size of a real train.
It offers a balance between size, detail, and layout flexibility, making it suitable for most hobbyists.
Flex track is often preferred for permanent layouts, while sectional systems like Kato Unitrack and Bachmann EZ Track are popular for beginners.
DC controls the track as a whole, while DCC allows individual control of locomotives with added features like sound.
Yes, HO scale is one of the best starting points due to its availability and ease of expansion.
Standard HO scale uses 16.5mm track to represent full-size (standard gauge) railroads. HOn3 models also use HO scale (1:87), but run on narrower track that represents 3-foot gauge railroads. HOn30 uses even narrower track, typically the same as N scale track, to represent 30-inch gauge railroads.
HOn3 is commonly used to model historic narrow gauge railroads, especially in mountainous regions where tighter curves and lighter track were required. It is popular for recreating mining, logging, and western railroads.
HOn30 is often used for very compact layouts, industrial railroads, and specialty scenes. Because it uses smaller track, it allows for tighter curves and more flexible layout designs in limited spaces.
No. Standard HO scale trains are designed for standard gauge track and are not compatible with HOn3 or HOn30 track systems.
A basic setup includes a locomotive, rolling stock, track, a power system, and a flat surface or layout base.
Yes, most HO train sets are designed to be expanded with additional track, locomotives, and accessories.
