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 subject	Real size	1:220 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

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

→ See all scales