MM → Inches

1 mm to inches

1 millimeters equals 0.03937 inches — or about 1/16" (nearest 1/16″).

Decimal

0.0394 in

Fraction

1/16"

Centimeters

0.1 cm

Feet

0.0033 ft

Millimeters (mm)

Inches (in)

0.03937

≈ 1/16" (nearest 1/16)

1 in = 25.4 mm · tolerance ±0.0001

Nearby values

0.9 mm 0.8 mm 1.2 mm 0.75 mm 1.25 mm 0.7 mm 1.3 mm 1.4 mm 0.6 mm 0.5 mm

Precision

0.0394

Inches

1.0 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 ÷ 25.4 = 0.03937

Why 1 mm = 0.0394 in

Since 1 inch is defined as exactly 25.4 millimeters, 1 mm converts to 0.03937 inches. Rounded to the nearest 1/16″ that's 1/16", which is what you'd read off a standard imperial ruler.