1:18 Scale Calculator

1:18 is the large, premium scale for diecast cars, where a typical car is around 25 cm long. At 1:18, an 18 cm real measurement becomes 1 cm on the model.

Scale Converter

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What fits at 1:18

Premium diecast cars, motorcycles and display models with full interior and engine detail.

Real subjectReal size1:18 model
Ford Mustang 4.8 m 26.7 cm
Bugatti Chiron 4.54 m 25.2 cm
Harley-Davidson motorcycle 2.4 m 13.3 cm
Human figure 1.8 m 10 cm

Size comparison at 1:18

Relative model sizes at 1:18 (longest bar = largest model):

1:18 in mm, cm and inches

How common real-world sizes convert to 1:18 model size:

Real sizeModel (mm)Model (cm)Model (inches)
1 m 55.6 mm 5.56 cm 2.19 in
2 m 111 mm 11.1 cm 4.37 in
5 m 278 mm 27.8 cm 10.9 in
10 m 556 mm 55.6 cm 21.9 in
1 ft 16.9 mm 1.69 cm 0.667 in
6 ft (person) 102 mm 10.2 cm 4 in

Frequently asked questions

How big is a 1:18 model car?

A 4.5 m car becomes about 25 cm long at 1:18 (4.5 ÷ 18 = 0.25 m).

Related scales

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