
Here is how to convert 542 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 542 as a fraction is 542/1. Therefore, to get the fractional answer to 542 mm in inches, we multiply 542/1 by 5/127 and simplify if necessary.
cm × 5/127 = inches
542/1 × 5/127 = inches
542/1 × 5/127 = 21 43/127
542/1 mm = 21 43/127 inches
542 mm = 21 43/127 inches
As promised above, we also have the answer to 542 mm in inches in decimal form. Although the fractional answer above is exact, the decimal answer may be rounded if necessary:
21 43/127 ≈ 21.3385826771654
21 43/127 ≈ 21.33858
542 mm ≈ 21.33858 inches
Our image below shows 542 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 542 mm and 21.33858 inches meet on the measuring tape.
Millimeters to Inches Calculator
Here you can convert another length in millimeters to inches.
What is 542.1 mm in inches?
Here is another inches to millimeters calculation that we have done for you.