
Here is how to convert 522.1 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 522.1 as a fraction is 5221/10. Therefore, to get the fractional answer to 522.1 mm in inches, we multiply 5221/10 by 5/127 and simplify if necessary.
cm × 5/127 = inches
5221/10 × 5/127 = inches
5221/10 × 5/127 = 20 141/254
5221/10 mm = 20 141/254 inches
522.1 mm = 20 141/254 inches
As promised above, we also have the answer to 522.1 mm in inches in decimal form. Although the fractional answer above is exact, the decimal answer may be rounded if necessary:
20 141/254 ≈ 20.5551181102362
20 141/254 ≈ 20.55512
522.1 mm ≈ 20.55512 inches
Our image below shows 522.1 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 522.1 mm and 20.55512 inches meet on the measuring tape.
Millimeters to Inches Calculator
Here you can convert another length in millimeters to inches.
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