# Convert 40 mm to fractional inches

40 mm = 137/64 in

Result: 40 millimeters is about 1 37/64 of an inch.

mm

## What is 40 mm in inches fraction?

The answer is 1 37/64 inches. The result is sometimes only an approximation of the real value because of rounding. But it's accurate enough for typical everyday measurements.

## How to Convert 40 mm to fractional inches?

To convert 40 millimeters to an inch fraction, you need to first convert 40 millimeters to inches. Since 1 inch is equal to 25.4 millimeters, divide 40 by 25.4 to get decimal inches:

40 mm ÷ 25.4 = 1.5748 in

Then, let's convert the decimal value of 1.5748 inches to a fraction.

To convert 1.5748 inches to a fraction, use a ruler or a decimal to fraction conversion table to find the nearest fraction with a reasonable denominator (fractional inches usually have denominators that are powers of 2, such as 2, 4, 8, 16, 32, 64).

In this example, use a ruler to find the closest fraction.

Using a ruler, you can see that 1.5748 inches is very close to 1 37/64 inches.

Therefore, 40 millimeters is approximately equal to 1 37/64 inches.