MM → Inches
165 mm to inches
165 millimeters equals 6.496063 inches — or about 6 1/2" (nearest 1/16″).
Decimal
6.4961 in
Fraction
6 1/2"
Centimeters
16.5 cm
Feet
0.5413 ft
mm
6.496063
in≈ 6 1/2" (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 = 165 ÷ 25.4 = 6.496063
Why 165 mm = 6.4961 in
Since 1 inch is defined as exactly 25.4 millimeters, 165 mm converts to 6.496063 inches. Rounded to the nearest 1/16″ that's 6 1/2", which is what you'd read off a standard imperial ruler.