Kato · H0 · 16.5 mm

Kato Unitrack H0: track planner from your own stock

25 items with verified geometry. Enter what you have, let the Auto-designer lay ovals, passing loops and stations, and view it in 3D at your table size.

Open the app · Track plan generator

What the Auto-designer gets out of a typical Kato Unitrack H0 drawer

• 

  Station with two platforms on R430, plus 2 sidings

  46 pieces · 7.3 m of track

  3x 2-841, 8x 2-111, 4x 2-193, 3x 2-840, 16x 2-260, 4x 2-120, 2x 2-270, 4x 2-130, 2x 2-170

• 

  Yard on R430, plus passing loop and siding

  45 pieces · 7.1 m of track

  3x 2-841, 7x 2-111, 5x 2-193, 2x 2-140, 16x 2-260, 3x 2-170, 3x 2-270, 2x 2-840, 2x 2-130, 2x 2-120

• 

  Dogbone on R490, plus 2 sidings

  31 pieces · 5.3 m of track

  4x 2-140, 2x 2-120, 2x 2-111, 18x 2-270, 1x 2-840, 2x 2-170, 1x 2-841, 1x 2-130

From the TrackDrawer Guide

• Cork and sound deadening under your track
• Rail joiners and joints: current and alignment
• DC and AC: two-rail and three-rail explained
• Benchwork: open frame or solid baseboard?
• Sidings and buffer stops: why and where
• Train runs jerkily: dirty track or wheels
• Left, right and symmetrical turnouts explained
• Terminus or through station?
• Passing loop: how two trains pass each other
• Shunting puzzle: designing a small yard
• Double oval: two trains at once
• The figure eight: crossing or bridge?
• An H0 layout on 240 x 120 cm: what fits?
• The oval: the simplest layout and how to expand it
• An H0 layout on 180 x 90 cm: what fits?

Geometry

Radius	mm	Curve	Angle
R370	370	2-280	22.5°
R430	430	2-260	22.5°
R490	490	2-270	22.5°
R550	550	2-210	22.5°
R610	610	2-220	22.5°
R670	670	2-230	22.5°
R730	730	2-240	22.5°
R790	790	2-250	22.5°
R867	867	2-290	10°

Power: 2-rail DC. Roadbed width 41 mm. Parallel spacing 74.6 / 26.3 mm.

Turnout pattern: 2-840 / 2-841 with counter curve 2-270; compensation 2-111 + 2-193.

12 combinations are recalculated on every build: circles that close, turnouts that land on the parallel spacing.

Items (25)

Straight track

• 2-105 Straight track 60 mm
• 2-111 Straight track 94 mm
• 2-120 Straight track 114 mm
• 2-193 Straight track 149 mm
• 2-130 Straight track 174 mm
• 2-140 Straight track 123 mm
• 2-150 Straight track 246 mm
• 2-160 Straight track 227 mm
• 2-180 Straight track 369 mm

Curves

• 2-280 Curved track R370 22,5°
• 2-260 Curved track R430 22,5°
• 2-270 Curved track R490 22,5°
• 2-210 Curved track R550 22,5°
• 2-220 Curved track R610 22,5°
• 2-230 Curved track R670 22,5°
• 2-240 Curved track R730 22,5°
• 2-250 Curved track R790 22,5°
• 2-290 Curved track R867 10°

Turnouts

• 2-840 Turnout #4 left (R490, 22,5°)
• 2-841 Turnout #4 right (R490, 22,5°)
• 2-862 Turnout #6 left (R867, 10°)
• 2-863 Turnout #6 right (R867, 10°)

Crossings

• 2-401 Crossing 90°

Feeder tracks

• 2-151 Feeder track 246 mm (with kabel)

End pieces

• 2-170 End piece with buffer stop 109 mm

Source: Kato USA Online Store (katousa.com, categoriepagina's ho-straight-unitrack en ho-switches), productpagina's en specificaties bij meerdere onafhankelijke vakhandelaren die de officiële Kato-maten overnemen (lombardhobby.com, tonystrains.com, trainworld.com, midwestmodelrr.com, whiterosehobbies.com, brshobbies.com); roadbed-breedte via gemeten cross-section besproken op modeltrainforum.com (onderzoek 2026-10-02). Geen aparte HO-pagina gevonden op kato.co.jp/unitrack.katomodels.com; die site toont voor dit artikelbereik uitsluitend de N-schaallijn.

Other systems in H0

• Märklin C track track planner
• Märklin K track track planner
• Märklin M track track planner
• Märklin my world track planner
• Trix C track track planner
• Roco GeoLine track planner
• Roco Line track planner
• Fleischmann Profi-Gleis track planner
• Piko A-Gleis track planner
• Tillig Elite track planner

TrackDrawer is not affiliated with Gebr. Märklin & Cie. GmbH or any other manufacturer. Item numbers and dimensions are factual product data, with sources cited in the catalogue.