42.162 Millimeters to Inches

42.162 mm ≈ 1.6599 in

Closest fraction: 1 2132(1.65625 in — differs by less than 1%)

Calculation: in = 42.162 mm × 0.0393701 ≈ 1.6599 in

Millimeter to Inch Converter

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Sig. Figures:

How long is 42.162 mm?

42.162 mm (4.22 cm) is comparable to the width of a thumb or the diameter of a coin.

What does 42.162 mm look like?

Comparable to the width of a thumb or the diameter of a coin
42.162 mm (4.22 cm) is comparable to the width of a thumb or the diameter of a coin.

42.162 mm on the inch scale

mm01020304050in00.511.5

42.16 mm = 1.66 in

How to Convert Millimeter to Inch

1 millimeter = 0.0393701 inches exact

Inch = Millimeter × 0.0393701

Example: 42.162 mm × 0.0393701 = 1.6599 in

Reverse Conversion

To convert inches back to millimeters:

  • Remember, 1 inch equals 25.4 millimeters.
  • To convert 1.6599 in to mm, multiply 1.6599 x 25.4, resulting in 42.162 mm.

exact This conversion factor is exact by international definition.

42.162 mm is also equal to:

  • 4.2162 centimeter
  • 0.042162 meter
  • 0.13833 feet
  • 0.046109 yard
About these units

Millimeter: Metric unit equal to one thousandth (1/1000) of a meter.

Inch: Imperial/US customary unit standardized as exactly 25.4 millimeters since 1959.

Frequently Asked Questions

How much is 42.162 millimeters in inches?

42.162 millimeters equals 1.6599 inches. This is calculated by multiplying 42.162 by the conversion factor 0.0393701.

What does 42.162 millimeters look like in inches?

42.162 millimeters (1.6599 inches) is one to four inches — a small component or connector.

How do you calculate 42.162 millimeters to inches?

Multiply 42.162 by the conversion factor 0.0393701. The calculation is 42.162 × 0.0393701 = 1.6599 inches. This factor is defined by international measurement standards.

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42.162 millimeters = 1.65992 inches
42.162 millimeters = 1.65992 inches — conversion chart

For general conversions between millimeters and inches, see the millimeters to inches converter.

Conversion factors verified against NIST, BIPM, ISO 80000-3 1 inch = 2.54 cm by international agreement (1959). Last reviewed: March 2026
Tiago Fernandes Reviewed by Tiago Fernandes

All unit conversions on CoolConversion use conversion factors defined or documented by internationally recognised standards bodies (such as ISO and NIST), including both SI and non-SI units.