MM → Inches

1.8 mm to inches

1.8 millimeters equals 0.070866 inches — or about 1/16" (nearest 1/16″).

Decimal

0.0709 in

Fraction

1/16"

Centimeters

0.18 cm

Feet

0.0059 ft

Millimeters (mm)

Inches (in)

0.070866

≈ 1/16" (nearest 1/16)

1 in = 25.4 mm · tolerance ±0.0001

Nearby values

1.75 mm 1.9 mm 1.7 mm 1.6 mm 2 mm 1.5 mm 2.1 mm 1.4 mm 2.2 mm 2.25 mm

Precision

0.0709

Inches

1.8 mm · max 100

Ref · 25.4 mm/in

Drag to set

Formula

To convert mm to inches, divide by 25.4:

inches = mm ÷ 25.4
inches = 1.8 ÷ 25.4 = 0.070866

Why 1.8 mm = 0.0709 in

Since 1 inch is defined as exactly 25.4 millimeters, 1.8 mm converts to 0.070866 inches. Rounded to the nearest 1/16″ that's 1/16", which is what you'd read off a standard imperial ruler.