Here is how to convert 25.4 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 25.4 as a fraction is 127/5. Therefore, to get the fractional answer to 25.4 mm in inches, we multiply 127/5 by 5/127 and simplify if necessary.
cm × 5/127 = inches
127/5 × 5/127 = inches
127/5 × 5/127 = 1
127/5 mm = 1 inches
25.4 mm = 1 inches
As promised above, we also have the answer to 25.4 mm in inches in decimal form. Although the fractional answer above is exact, the decimal answer may be rounded if necessary:
1 = 1
1 = 1
25.4 mm = 1 inches
Our image below shows 25.4 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 25.4 mm and 1 inches meet on the measuring tape.
Millimeters to Inches Calculator
Here you can convert another length in millimeters to inches.
What is 25.5 mm in inches?
Here is another inches to millimeters calculation that we have done for you.