MM → Inches
425 mm to inches
425 millimeters equals 16.732283 inches — or about 16 3/4" (nearest 1/16″).
Decimal
16.7323 in
Fraction
16 3/4"
Centimeters
42.5 cm
Feet
1.3944 ft
mm
16.732283
in≈ 16 3/4" (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 = 425 ÷ 25.4 = 16.732283
Why 425 mm = 16.7323 in
Since 1 inch is defined as exactly 25.4 millimeters, 425 mm converts to 16.732283 inches. Rounded to the nearest 1/16″ that's 16 3/4", which is what you'd read off a standard imperial ruler.