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

Pick a preset or type a ratio — results update instantly.

From

at scale

Scale ratio 1 :

at scale

Scale ratio 1 :

Enter a value to convert.

What fits at 1:18

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

Real subject	Real size	1:18 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

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

→ See all scales