1:200 Scale Calculator & Conversion Chart

Airliners, warships & site plans · 0.5% of real size

1:200 leads a triple life. It is the premium desktop airliner scale — the size airline display models and collectors standardize on — and a major warship scale between 1:144 and 1:350, where the big battleship kits run well past half a meter long. In metric architecture the same ratio is the standard site-plan and massing-model scale: 5 mm on the drawing equals a real meter, small enough to fit an entire building plot on one sheet.

Precision Scale Converter & Calculator

Real World Size

Scale (1 : N)

Scaled Size

1:200 Scale Quick Facts

Scale factor: 1 ÷ 200 (0.5% of real size)
1 real foot = 0.06″ (1.52 mm) on the model
1 real meter = 5 mm (0.5 cm) on the model
A 6 ft (183 cm) person = 9.1 mm (0.36″) tall
Model is 0.5% of real size — use this as the scale percentage in 3D-print slicers

1:200 Scale Reference Chart

Real Size	mm	cm	inches
1 inch	0.127 mm	0.013 cm	0.005″
1 foot	1.5 mm	0.152 cm	0.06″
6 ft (person)	9.1 mm	0.914 cm	0.36″
1 meter	5 mm	0.5 cm	0.197″
3 m (room height)	15 mm	1.5 cm	0.591″
10 meters	50 mm	5 cm	1.969″
30 m (building)	150 mm	15 cm	5.906″

Frequently Asked Questions

What is 1:200 scale in mm, cm, and inches?

In 1:200 Scale, 1 unit on the model equals 200 of the same unit in real life. One real foot equals 0.06 inches (1.52 mm) on the model, one real meter equals 5 mm (0.50 cm), and the model is 0.5% of real size.

How tall is a 6 ft person in 1:200 Scale?

A 6-foot (183 cm) person stands 9.1 mm (0.36 inches) tall in 1:200 Scale.

How do I convert a real measurement to 1:200 Scale?

Divide the real measurement by 200. For example, a 10 m object is 50.0 mm long in 1:200 Scale. The calculator on this page does this automatically in both directions.

Is 1/200 the same as 1:200 Scale?

Yes — "1/200", "1:200", and "1:200 Scale" all describe the same ratio. The scale factor is 1 ÷ 200, so the model is 0.5% of real size. Enter 200 in the calculator above to convert any measurement to or from this scale.