1:50 Scale Calculator & Conversion Chart

Floor plans & construction diecast · 2% of real size

1:50 leads a double life. In metric architectural drawing it is the workhorse floor-plan and section scale — 2 cm on paper equals a real meter, and study models are large enough to show door swings convincingly. In the diecast world it is the construction machinery standard: nearly every collectible Cat, Komatsu, and Liebherr excavator, crane, and dozer is modeled at 1:50.

Precision Scale Converter & Calculator

Real World Size

Scale (1 : N)

Scaled Size

1:50 Scale Quick Facts

Scale factor: 1 ÷ 50 (2% of real size)
1 real foot = 0.24″ (6.1 mm) on the model
1 real meter = 20 mm (2 cm) on the model
A 6 ft (183 cm) person = 36.6 mm (1.44″) tall
Model is 2% of real size — use this as the scale percentage in 3D-print slicers

1:50 Scale Reference Chart

Real Size	mm	cm	inches
1 inch	0.508 mm	0.051 cm	0.02″
1 foot	6.1 mm	0.61 cm	0.24″
6 ft (person)	36.6 mm	3.66 cm	1.44″
1 meter	20 mm	2 cm	0.787″
3 m (room height)	60 mm	6 cm	2.362″
10 meters	200 mm	20 cm	7.874″
30 m (building)	600 mm	60 cm	23.622″

Frequently Asked Questions

What is 1:50 scale in mm, cm, and inches?

In 1:50 Scale, 1 unit on the model equals 50 of the same unit in real life. One real foot equals 0.24 inches (6.1 mm) on the model, one real meter equals 20 mm (2.00 cm), and the model is 2% of real size.

How tall is a 6 ft person in 1:50 Scale?

A 6-foot (183 cm) person stands 36.6 mm (1.44 inches) tall in 1:50 Scale.

How do I convert a real measurement to 1:50 Scale?

Divide the real measurement by 50. For example, a 10 m object is 200.0 mm long in 1:50 Scale. The calculator on this page does this automatically in both directions.

Is 1/50 the same as 1:50 Scale?

Yes — "1/50", "1:50", and "1:50 Scale" all describe the same ratio. The scale factor is 1 ÷ 50, so the model is 2% of real size. Enter 50 in the calculator above to convert any measurement to or from this scale.