
Here is how to convert 438 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 438 as a fraction is 438/1. Therefore, to get the fractional answer to 438 mm in inches, we multiply 438/1 by 5/127 and simplify if necessary.
cm × 5/127 = inches
438/1 × 5/127 = inches
438/1 × 5/127 = 17 31/127
438/1 mm = 17 31/127 inches
438 mm = 17 31/127 inches
As promised above, we also have the answer to 438 mm in inches in decimal form. Although the fractional answer above is exact, the decimal answer may be rounded if necessary:
17 31/127 ≈ 17.244094488189
17 31/127 ≈ 17.24409
438 mm ≈ 17.24409 inches
Our image below shows 438 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 438 mm and 17.24409 inches meet on the measuring tape.
Millimeters to Inches Calculator
Here you can convert another length in millimeters to inches.
What is 438.1 mm in inches?
Here is another inches to millimeters calculation that we have done for you.