General Guide to Model-Making Scales
(Modernized 29 June 2012)

Intention of this List

This list is intended to provide a handy generalized “feel” for the sizes of each popular model-making scale.

Converting From Actual Dimensions to Scaled Dimensions

To do this, divide the actual dimension by the scale; e.g. if you are converting something to 1/35 scale, divide that dimension by 35.

G Scale (1:22.5)

Fractional Scale: 1/2 inch = 1 foot
CV-9 Essex (872’ length): 465 inches (38.8 ft)
B-17G Flying Fortress (74’ 4” wingspan): 39.64 inches
M4A1 Sherman (19’ 2” length): 10.22 inches

1:35 Scale

Fractional Scale: 1/3 inch = 1 foot
CV-9 Essex (872’ length): 299 inches (24.9 ft)
B-17G Flying Fortress (74’ 4” wingspan): 25.49 inches
M4A1 Sherman (19’ 2” length): 6.57 inches
Notes: Popular for armored fighting vehicle (AFV) modelling.

O Scale (1:48)

Fractional Scale: 1/4 inch = 1 foot
CV-9 Essex (872’ length): 218 inches (18.2 ft)
B-17G Flying Fortress (74’ 4” wingspan): 18.58 inches
M4A1 Sherman (19’ 2” length): 4.79 inches

S Scale (1:64)

Fractional Scale: 3/16 inch = 1 foot
CV-9 Essex (872’ length): 163.5 inches (13.6 ft)
B-17G Flying Fortress (74’ 4” wingspan): 13.94 inches
M4A1 Sherman (19’ 2” length): 3.59 inches

1:72 Scale

Fractional Scale: 1/6 inch = 1 foot
CV-9 Essex (872’ length): 145.33 inches (12.1 ft)
B-17G Flying Fortress (74’ 4” wingspan): 12.39 inches
M4A1 Sherman (19’ 2” length): 3.19 inches
Notes: Popular for armored fighting vehicle (AFV) modelling.

1:350 Scale

Fractional Scale: 3/88 inch = 1 foot
CV-9 Essex (872’ length): 29.9 inches (2.5 ft)
B-17G Flying Fortress (74’ 4” wingspan): 2.55 inches
M4A1 Sherman (19’ 2” length): 0.66 inches or 16.7mm

1:400 Scale

Fractional Scale: 2/67 inch = 1 foot
CV-9 Essex (872’ length): 26.16 inches (2.2 ft)
B-17G Flying Fortress (74’ 4” wingspan): 2.23 inches
M4A1 Sherman (19’ 2” length): 0.58 inches or 14.6mm

1:700 Scale

Fractional Scale: 1/58 inch = 1 foot
CV-9 Essex (872’ length): 14.95 inches (1.2 ft)
B-17G Flying Fortress (74’ 4” wingspan): 1.27 inches
M4A1 Sherman (19’ 2” length): 0.33 inches or 8.3mm

1:1200 Scale

Fractional Scale: 1/99 inch = 1 foot
CV-9 Essex (872’ length): 8.72 inches (0.7 ft)
B-17G Flying Fortress (74’ 4” wingspan): 0.74 inches or 18.88mm
M4A1 Sherman (19’ 2” length): 0.19 inches or 4.9mm