Here is how to convert 30 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 30 as a fraction is 30/1. Therefore, to get the fractional answer to 30 mm in inches, we multiply 30/1 by 5/127 and simplify if necessary.

cm × 5/127 = inches

30/1 × 5/127 = inches

30/1 × 5/127 = 1 23/127

30/1 mm = 1 23/127 inches

**30 mm = 1 23/127 inches**

As promised above, we also have the answer to 30 mm in inches in decimal form. Although the fractional answer above is exact, the decimal answer may be rounded if necessary:

1 23/127 ≈ 1.18110236220472

1 23/127 ≈ 1.18110

**30 mm ≈ 1.18110 inches**

Our image below shows 30 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 30 mm and 1.18110 inches meet on the measuring tape.

**Millimeters to Inches Calculator**

Here you can convert another length in millimeters to inches.

What is 30.1 mm in inches?

Here is another inches to millimeters calculation that we have done for you.