So you’ve decided to make your first forays into the world of model trains, maybe it’s memories of toy trains around the Christmas tree, or watching from the interstate as an engine pulled dozens of cars across countries, you’ve decided to recreate the memories in your own garage or den. The first item of business is to decide in which scale you would like to work in. The scale refers to the size of your models relative the size of a real life train. The most common model train scales are: HO scale, N scale, O scale, and to a lesser extent Z scale and G scale. There are also slight variations on scale such as Hon3 scale and Nn3 scale.
HO scale is currently the most common of model train scales out there and consequently most popular. HO scale is 1/87th the size of a real life train. This size lends itself to decent sized home layouts while still being big enough to easily work with. Along with N scale model trains and cars HO model trains and cars will be the most plentiful and easy to locate. A variation on HO scale is Hon3 scale, which is a model of the same size but the track gauge is slightly narrower, the gauge refers to the amount of space between the train tracks.

HO scale model train
N scale is also another very popular model train scale with a wide range of model train engines, model train cars, track options, model buildings, and terrains available. N scale model trains are scaled at 1/160th the size of a real train and are about half the size of an HO scale model train. Due to the smaller nature of the N scale model train versus the HO scale model train you can do a much larger layout with N scale model trains but the work requires more patience when setting up due to the smaller nature of everything.
Z scale model trains comes in at 1/220th the size of a real train and is a approximately a third smaller than the N scale model trains. This scale requires even more patience when detailing and can be somewhat dull for people with poor eyesight or larger hands. While Z scale model trains are not for every enthusiast you can accommodate some truly stunning layouts in a very small amount of space.
O scale model trains are on the opposite end of the spectrum from Z scale model trains and are quite large at a scale of 1/48th the size of a real train. The O scale was once quite popular and was more common a few decades ago and now command higher prices to collectors. I have fond memories of the O scale engine and cars constantly revolving around the Christmas tree at my parent’s house. Some special edition, branded, O scale model trains are being released again but they are almost always plastic and not that satisfying metal of the originals.
G scale model trains are the only scale larger than that of O scale, coming it at 1/24th the size of the real deal. These model trains are quite large and are primarily used in outdoor settings. It’s pretty neat to see a train chugging through the herb garden or along the gazebo deck.
Knowing which scale model train you want to start with is important, take the time to browse around the hobby shop and look at each one, compare prices, and availability of product. Also when choosing which model train scale to go with be mindful of the amount of space you are allocating to your new hobby. But most importantly be sure to choose the model train scale that will give you the most enjoyment!
Engines and Cars, The Basics
g scale, ho scale, model trains, n scale, o scale, z scale