MM → Inches
204 mm to inches
204 millimeters equals 8.031496 inches — or about 8 1/16" (nearest 1/16″).
Decimal
8.0315 in
Fraction
8 1/16"
Centimeters
20.4 cm
Feet
0.6693 ft
mm
8.031496
in≈ 8 1/16" (nearest 1/16)
1 in = 25.4 mm · tolerance ±0.0001
Formula
To convert mm to inches, divide by 25.4:
inches = mm ÷ 25.4
inches = 204 ÷ 25.4 = 8.031496
Why 204 mm = 8.0315 in
Since 1 inch is defined as exactly 25.4 millimeters, 204 mm converts to 8.031496 inches. Rounded to the nearest 1/16″ that's 8 1/16", which is what you'd read off a standard imperial ruler.