MM → Inches

5 mm to inches

5 millimeters equals 0.19685 inches — or about 3/16" (nearest 1/16″).

Decimal

0.1969 in

Fraction

3/16"

Centimeters

0.5 cm

Feet

0.0164 ft

mm
0.19685
in

3/16" (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 = 5 ÷ 25.4 = 0.19685

Why 5 mm = 0.1969 in

Since 1 inch is defined as exactly 25.4 millimeters, 5 mm converts to 0.19685 inches. Rounded to the nearest 1/16″ that's 3/16", which is what you'd read off a standard imperial ruler.