Limited available space
A complete layout can fit on a small table, inside a shelving unit or within a specially designed model railway suitcase.
A complete railway world in a remarkably small area
Z Gauge Model Railway: Small, Precise & Space-Saving
Z gauge combines a scale of 1:220 with a model track gauge of only 6.5 millimetres. Complete stations, landscapes and long railway routes can therefore be built within areas where larger scales would permit little more than a simple track circuit.
Scale 1:220
Track gauge 6.5 mm
Ideal for compact layouts
A small scale with extensive creative possibilities
What is a Z-gauge model railway?
A full-size vehicle measuring 22 metres in length is only ten centimetres long in Z gauge. One kilometre of prototype railway is reduced to approximately 4.55 metres. This makes it possible to represent long train formations and extensive scenery within a comparatively small layout.
The scale became particularly well known through Märklin mini-club. The range is supplemented by manufacturers such as NOCH, Rokuhan, Faller and other suppliers of track, buildings, preformed layouts, scenery materials and maintenance accessories.
The small model size requires careful workmanship. Vehicles are more sensitive to dirty track, poor rail connections and abrupt changes in gradient. A cleanly constructed and regularly maintained layout can nevertheless operate reliably.
Planning advice
The tightest possible curve is not always the best choice
Long express coaches and large steam locomotives look more natural on wider curves. Always check the manufacturer's recommended minimum radius for each vehicle.
Compact, portable and focused on scenery
Who is Z gauge suitable for?
Long train formations
Express and freight trains already look complete and prototypically proportioned on moderate layout lengths.
Scenery as the main focus
Mountains, valleys, bridges and long open routes can take a more prominent role than they can in larger scales.
Portable layouts
Suitcase and compact layouts can be stored safely and transported easily to exhibitions or club meetings.
Precision modelling
The small scale rewards steady workmanship, fine tools and a well-lit working area.
Space-saving collections
Locomotives and rolling stock require little display space and can be assembled into extensive themed collections.
Base area, curve radius and safe access
Plan a Z-gauge layout sensibly
Before buying track, decide whether the layout should contain a simple continuous circuit, a through station, a double-track main line or a compact shunting layout.
Measure the base area
Allow space for operation, wiring, the backdrop and a protective cover.
Define the curve radii
Use radii of 195 or 220 millimetres for long vehicles wherever possible.
Limit the gradients
Gentle ramps improve the tractive performance of small, lightweight locomotives.
Ensure access
Build tunnels and hidden sections so they remain accessible for cleaning and recovery.
| Planning area | Recommendation | Why is it important? |
|---|---|---|
| Curves | Vehicle-dependent and as generous as possible | Long vehicles run more smoothly and look more natural. |
| Gradients | Gentle ramps and long transitions | The low vehicle weight limits the available tractive effort. |
| Station | Test the usable length before constructing the scenery | Complete trains should fit between the turnouts. |
| Tunnels | Provide removable scenery sections | Derailments and track cleaning remain accessible. |
| Baseboard | Level and resistant to twisting | Small irregularities can have a noticeable effect on operation. |
Reduce prototype dimensions correctly
Calculate dimensions at a scale of 1:220
To obtain the model dimension, divide the prototype measurement by 220. A platform measuring 110 metres in real life therefore requires 50 centimetres in Z gauge.
The calculator also compares the model length with N, TT and H0. This makes the reduction in space achieved by Z gauge immediately visible.
Scale Calculator
Enter the prototype length in metres.
Z Gauge · 1:220
10.0 cm
N Gauge · 1:160
13.8 cm
TT Gauge · 1:120
18.3 cm
H0 Gauge · 1:87
25.3 cm
Conventional controller or decoder control
Should Z gauge be operated in analogue or digital mode?
Analogue operation
Voltage and polarity determine the speed and direction. Starter sets provide a straightforward introduction.
Digital operation
Each locomotive receives an address. Several vehicles can be controlled independently on the same section of track.
Digital conversion
Installation requires a suitable micro decoder, adequate space, motor isolation and careful wiring.
Before a digital conversion
Check the motor current, track voltage and installation space
A decoder must not be selected from its external dimensions alone. Its current capacity, heat dissipation and connection type must suit the locomotive.
Märklin mini-club and Rokuhan
Which track system suits a Z-gauge layout?
Select a primary system as early as possible. The track geometry, rail joiners, turnout drives and power connections must all be compatible.
| Feature | Märklin mini-club | Rokuhan |
|---|---|---|
| Construction | Conventional track without fixed roadbed | Track with an integrated roadbed appearance |
| Planning | Straight sections, curves, turnouts and flexible track | Clip-together geometry using fixed track sections |
| Scenery | The ballast bed can be constructed individually | Track can be laid quickly with a finished appearance |
| Combining systems | Transitions require careful technical checking | The construction height and rail joiners differ |
Space requirements and visual impact
Z gauge compared with other model railway gauges
| Gauge | Typical scale | Particular strength | Space requirement |
|---|---|---|---|
| Z | 1:220 | Long routes and compact layouts | Very low |
| N | 1:160 | Wide product range with low space requirements | Low |
| TT | 1:120 | A balance between model size and route length | Medium |
| H0 | 1:87 | Very large selection of vehicles and accessories | Higher |
| 0, 1 and G | Approximately 1:45 to 1:22.5 | Large models with a strong visual impact | Very high |
Vehicles, track, scenery and buildings
Important manufacturers for Z gauge
Suitable products at Modellbahnshop
Starter sets, vehicles, track and accessories for Z gauge
Check the recommended minimum radius for every vehicle. Track manufacturer, geometry and rail joiners must match the existing system.
Start immediately or choose a completed layout
Starter sets and suitcase layouts
Starter Set
Märklin 81875 Modern Freight Transport
Modern freight train with a diesel locomotive and track layout.
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Christmas
Märklin 81845 Christmas Train
Festively decorated steam freight train with a track oval.
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Beginner
Märklin 81701 Freight Train
Compact introduction with a locomotive, wagons and track circuit.
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Passenger Train
Märklin 81874 Museum Passenger Train
Class 24 steam locomotive with passenger and luggage coaches.
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Suitcase Layout
NOCH 88318 St. Anton
Fully decorated portable winter layout in an aluminium-profile case.
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Suitcase Layout
NOCH 88303 Meran
Ready-to-run compact model railway layout with completed scenery.
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Steam, electric and modern long-distance transport
Locomotives and rolling stock
Steam Locomotive
Märklin 88013 Steam Locomotive 01 2118-6
Large express steam locomotive for historic passenger trains.
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Freight Train
Märklin 88986 Class 055
Classic Deutsche Bundesbahn freight steam locomotive.
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Express Train
Märklin 88015 Class 01
Deutsche Bundesbahn express steam locomotive.
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Electric Locomotive
Märklin 88546 Class 103
Museum express locomotive in its classic colour scheme.
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Electric Locomotive
Märklin 88529 Class 120
Versatile DB AG electric locomotive.
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Steam Locomotive
Märklin 88858 Class 03.10
Streamlined express locomotive suited to generous curve radii.
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FlixTrain
Märklin 88239 FlixTrain Vectron
Modern electric locomotive for the green long-distance train.
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Coach Set
Märklin 87307 Touristik 2
Double-deck coaches for a distinctive passenger train.
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FlixTrain
Märklin 87403 FlixTrain
Three-part passenger coach set for modern long-distance trains.
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Track construction, maintenance and scenery
Track and accessories
Flexible Track
Märklin 8594 Flexible Track
Suitable for individual straight sections and gentle alignments.
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Radius 220
Märklin 8530 Curve
A more generous curve for longer Z-gauge vehicles.
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Radius 195
Märklin 8521 Curve
Commonly used radius for compact track plans.
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Filler Track
Märklin 8504 Straight Track
Short track section for precise length compensation.
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Rokuhan
Rokuhan 97009 Straight Track
Four straight track sections for the Rokuhan track system.
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Rokuhan
Rokuhan 97002 Curve
Curved track sections for compact Rokuhan layouts.
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Maintenance
Minitrix 66623 Cleaning Brush
Cleans powered locomotive wheels while they are turning.
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Building
Faller 282702 Langwies Station
Compact station building for Alpine Z-gauge scenes.
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Explore planning and operation in more detail
Related model railway guides
Frequently asked questions about the smallest common scale
FAQ about Z-gauge model railways
What scale is Z gauge?
Z gauge is produced at a scale of 1:220. The model track gauge between the rails is 6.5 millimetres.
How much space does a Z-gauge layout require?
A complete track circuit can fit on a small table or shelf. Suitcase layouts demonstrate how compact a fully decorated model railway can be.
Is Z gauge suitable for beginners?
Yes, especially with a starter set or completed layout. The small vehicles nevertheless require careful handling and regular maintenance.
Can Z gauge be operated digitally?
Yes. It requires a very small decoder suited to the motor current and track voltage, together with clean and careful wiring.
Which curve radius is suitable for Z gauge?
This depends on the vehicle. Radii of 195 or 220 millimetres frequently provide greater operational reliability and a better appearance.
Why does a Z-gauge locomotive sometimes stop?
The small contact areas are sensitive to dirt. Clean the track and wheels and inspect the rail joiners and wheel contacts.
Can Märklin and Rokuhan track be combined?
Only by using a technically sound transition. The construction height, rail joiners and track geometry differ.
How steep can a Z-gauge layout be?
Gradients should remain as gentle as possible. Small locomotives have little weight and quickly lose tractive effort with long trains.
Is Z gauge suitable only for short trains?
No. The small scale makes it possible to operate comparatively long passenger and freight trains within a limited base area.
How can a Z-gauge layout be protected from dust?
Protective covers, display cases and suitcase solutions reduce contamination. The track and vehicles should nevertheless be inspected regularly.
Z gauge turns limited space into a complete railway world
Further gauges, planning tools, manufacturer guides and step-by-step instructions are available in the central model railway guide.