Millimeters To Inches Converter: What’s the Conversion Factor?

In general, it becomes intricate to calculate the length of a thing in a more subtle way. And that’s when the units of measurement come into play. Albeit being simple, it becomes tough when the number is not easily comprehensible or either present in decimal terms. That way, converting the number into small versions of length units becomes a hefty taks. However, employing the proper formula makes the conversion straightforward and practical. Since millimeters and inches are both units of length, it is also crucial to comprehend how these two quantities relate to one another.

So, this article is going to be a cake walk for you to understand the basic conversion of millimeters into inches. The piece below is curated in a manner that will walk you through each unit. Their history, usage, basic difference between both the units and how you can apply them altogether for conversion.

What is a Millimeter?

Millimeter is the smallest unit to measure the length. It is generally denoted in the metric system with the distinction of symbol, mm. In 1 meter, there are thousand millimeters and in 1 cm, there are ten millimeters . 

• Current Use of Millimeter

The metric unit for measuring considerably small but noticeable-on-scale lengths and distances is the millimeter. Currently, it is specified as the distance a light source travels in a certain amount of time. The device is now being used to roughly estimate the size of a wire that is used in a typical paper clip for the sake of making real-world comparisons.

• History of Millimeter

Since 1983, the meter has been used to measure the length of the path light takes in a vacuum for a period of time equal to 1/299792458 of a second. Light travels a distance of one millimeter, or one thousandth of a meter, in a period of time equal to one-fifth of a second.

About Inches

Inches are often measured as 1/36 of a yard or 1/12 of a foot. The unit, that is symbolised as in or “, is a length measurement in both the British Imperial system and the customary systems of measurement used in the United States. The width of a human thumb is often used to describe the unit. It is also regarded to be the length of a snake.

• Current Use of Inch

The inch is a common length measurement in the US, Canada, and the UK. In Japan, the length of electronic components, primarily display screens, is measured using the same unit. According to legend, the word “inch” is derived from the Old English words “ince” or “ynce,” which itself typically stemmed from the Latin word “uncia.”

• History of Inch

The criteria for the actual length of an inch have experienced numerous changes over time. However, since the international yard was adopted in the 1950s and 1960s, it has been defined as 25.4mm and based on the metric system. The Roman uncia, meaning “twelfth,” is where the term “inch” comes from.

Inches vs. Millimeters

Therefore, you must have learned enough about millimeters and inches to know what they are, how to convert them to inches, and the formula for doing so. Let’s continue to understand more about the units and how millimeters and inches differ. An inch is a length measurement that is equal to 25.4 millimeters, while a millimeter is a length measurement that is equal to one thousandth of a meter.

The following table will help you better understand the differences between millimeters and inches:

Relationship between Millimeter and Inch

The relationship between millimeters and inches is quite easily understandable. 1 millimeter is equal to 0.0393701 inches, and 1 inch is equivalent to 25.4 millimeters.

The mathematical relationship between millimeters and inches can be described as follows:

1 Millimeter = 0.0393701 Inches
1 Inch = 25.4 Millimeters

How to Convert Millimeters to Inches?

It’s time to offer you a clear idea using more detailed examples now that we’ve gone to the trouble of explaining millimeters and inches to you like frosting on the cake.

Therefore, you only need to multiply a millimeter value by 0.0393701 to convert it to an inch.

To help you understand how to convert mm to inches, let’s go right into some popular mm to inch conversions/ examples.

Formula For Converting Millimeters to Inches

After having an in-depth walkthrough about 1 millimeters being equivalent to 0.0393701 inches, you can use this simple Mm to Inches conversion formula mentioned below:

1 mm= 0.039371 inches

Some illustrations to help convert millimeters into inches are given below.

Example 1: Convert 20 mm into Inches

 1 mm= 0.039371 inches

20 mm= (20*0.039371)= 0.78742 inches

So, 20 mm is equivalent to 0.78742 inches.

Example 2: Convert 30 mm into Inches

 1 mm= 0.039371 inches

30 mm= (30*0.039371)= 1.18113 inches

So, 30 mm is equivalent to 1.18113 inches.

Example 3: Convert 50 mm into Inches

1 mm= 0.039371 inches

50 mm= (50*0.039371)= 1.96855 inches

So, 50 mm is equivalent to 1.96855 inches.

Example 4: Convert 70 mm into Inches

1 mm= 0.039371 inches

70 mm= (70*0.039371)= 2.75597 inches

So, 70 mm is equivalent to 2.75597 inches.

Example 5: Convert 100mm to inches

1 mm= 0.039371 inches

100 mm= (100*0.039371)= 3.9371 inches

So, 100 mm is equivalent to 3.9371 inches.

Example 6: Convert 120 mm into Inches

1 mm= 0.039371 inches

120 mm= (120*0.039371)= 4.72452 inches

So, 120 mm is equivalent to 4.72452 inches.

Example 7: Convert 170 mm into Inches

1 mm= 0.039371 inches

170 mm= (170*0.039371)= 6.69307 inches

So, 170 mm is equivalent to 6.69307 inches.

MM to Inches Conversion Table

The conversion of millimeters to inches is shown in the following table.

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