Here is how to convert 42 mm to inches. We will give you the fractional answer, the decimal answer, and illustrate the answer on our tape measure.
One millimeter is equal to 5/127 inches, and 42 as a fraction is 42/1. Therefore, to get the fractional answer to 42 mm in inches, we multiply 42/1 by 5/127 and simplify if necessary.
cm × 5/127 = inches
42/1 × 5/127 = inches
42/1 × 5/127 = 1 83/127
42/1 mm = 1 83/127 inches
42 mm = 1 83/127 inches
As promised above, we also have the answer to 42 mm in inches in decimal form. Although the fractional answer above is exact, the decimal answer may be rounded if necessary:
1 83/127 ≈ 1.65354330708661
1 83/127 ≈ 1.65354
42 mm ≈ 1.65354 inches
Our image below shows 42 mm on a tape measure. The top row of the tape measure is inches, and each mark on the bottom row is 1 millimeter (10 millimeter marks equal 1 centimeter).
As you can see, we drew a red line where 42 mm and 1.65354 inches meet on the measuring tape.
Millimeters to Inches Calculator
Here you can convert another length in millimeters to inches.
What is 42.1 mm in inches?
Here is another inches to millimeters calculation that we have done for you.