Z Scale Calculator

Z scale (1:220) is among the smallest commercial model railroad scales, running on 6.5 mm gauge track — small enough to build a layout in a briefcase. At Z scale, a 220 cm real measurement becomes 1 cm on the model.

Scale Converter

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What fits at 1:220

Micro layouts, portable dioramas and space-constrained railroads.

Real subjectReal size1:220 model
EMD F7 locomotive 15.4 m 7 cm
40 ft boxcar 12.2 m 5.5 cm
Person 1.8 m 8.2 mm

Size comparison at 1:220

Relative model sizes at 1:220 (longest bar = largest model):

1:220 in mm, cm and inches

How common real-world sizes convert to 1:220 model size:

Real sizeModel (mm)Model (cm)Model (inches)
1 m 4.55 mm 0.455 cm 0.179 in
2 m 9.09 mm 0.909 cm 0.358 in
5 m 22.7 mm 2.27 cm 0.895 in
10 m 45.5 mm 4.55 cm 1.79 in
1 ft 1.39 mm 0.139 cm 0.055 in
6 ft (person) 8.31 mm 0.831 cm 0.327 in

Frequently asked questions

How small is Z scale?

A 1.8 m person is only about 8.2 mm tall at Z scale (1800 mm ÷ 220).

Related scales

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