1:43 Scale Calculator

1:43 is the traditional European standard for collectible model cars, where a typical car is about 10 cm long. The scale comes from O-gauge model railways, where 1:43 cars matched the trains.

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What fits at 1:43

Collectible diecast cars, rally and Formula 1 models, and railway layout vehicles.

Real subjectReal size1:43 model
Formula 1 car 5.5 m 12.8 cm
Family sedan 4.5 m 10.5 cm
Classic Mini 3.05 m 7.1 cm
Human figure 1.8 m 4.2 cm

Size comparison at 1:43

Relative model sizes at 1:43 (longest bar = largest model):

1:43 in mm, cm and inches

How common real-world sizes convert to 1:43 model size:

Real sizeModel (mm)Model (cm)Model (inches)
1 m 23.3 mm 2.33 cm 0.916 in
2 m 46.5 mm 4.65 cm 1.83 in
5 m 116 mm 11.6 cm 4.58 in
10 m 233 mm 23.3 cm 9.16 in
1 ft 7.09 mm 0.709 cm 0.279 in
6 ft (person) 42.5 mm 4.25 cm 1.67 in

Frequently asked questions

How big is a 1:43 model car?

A 4.5 m car becomes about 10.5 cm long at 1:43 (4.5 ÷ 43).

Why is 1:43 so common for model cars?

It grew from O-gauge model railways (around 1:43–1:48), so road vehicles were made to match the trains, and the size stuck for collectors.

Related scales

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