Millimeter to Inches Conversion (Mm to Inches)
Whenever you need to convert Millimeter to Inches for measuring length, you need to switch from the metric system to the imperial system. This is because a millimeter (mm) is a metric system unit whereas an inch (in) is a unit of length in the imperial system.
The formula used to convert Millimeter to Inches: One inch = 25.4 millimetres
To convert mm to inches, just divide the length (in mm) by 25.4.
We have solved so many examples by using this formula to make you understand the units better. But before that, let us understand the definitions of millimetres and inches, the relationship between the two, the conversion formula, and then the examples using the mm-to-inch calculator.
What is a Millimeter (mm)? History and Uses of Millimeter??
A millimetre is symbolized as “mm”. It is an SI unit of length in the metric system used to measure the dimensions of extremely small objects that are visible on scale lengths and distances. In history, the meter has been defined as a unit to measure the length of the path light travels in a vacuum during a time of 1/299792458 of a second since 1983.
What is an Inch? History and uses of Inches??
An inch is a unit of measurement used to describe distance in the imperial system. It’s a commonly used unit in the United States and the United Kingdom. In layman’s language, one inch is about the width of a thumb or the length of a paperclip. In the metric system, one inch is approximately equal to 2.54 centimeters and 25.4mm on the metric system. In day-to-day life, you use inches to measure things like the size of a TV screen or the height of a person. Also, the word “inch” has been derived from the Roman uncia “twelfth”.
Relationship between Millimeter and Inches
To understand the mathematical relationship between millimetres and inches, you need to understand these formulas:
1 millimetre = 0.0393701 inches
1 inch = 25.4 millimetres.
How to Convert Millimeter to Inches?
To convert millimetres to inches, simply divide the given length(mm) by 25.4. Isn’t it simple? Let’s understand it with the help of a few examples.
So now you know the formula to use to convert mm to inches:
1 Millimetre = Inches x 0.0393701
Example 1: Convert 15 mm into Inches
Solution: By using the formula,
1 millimetre = 0.0393701 inches
15 mm = 15 x 0.0393701 = 0.5905515 inches
Hence, 25 mm is equal to 0.5905515 inches.
Example 2: Convert 30 mm to Inches
Solution 2: Just like above,
30 mm = 30 x 0.0393701 = 1.181103 inches
Example 3: Convert 45 mm to Inches
Solution 3: 45 mm = 45 x 0.0393701 = 1.7716545 inches
Example 4: Convert 75 Millimeter to Inches
Solution 4: 75mm = 75 x 0.0393701 = 2.9527575 inches
Example 5: Convert 115 mm to Inches
Solution 5: 115 mm = 115 x 0.0393701 = 4.5275615 inches
Difference between Millimeter and Inches
| Basis of Comparison | Millimeters (mm) | Inches (in or ”) |
| Abbreviation / Symbol | mm | in or” |
| Definition | A millimeter is a unit in the metric system used to measure small distances. There are one thousand millimetres in a meter and ten millimeters in a centimeter. | An inch is a unit of length measurement used in the British Imperial system. The width of the human thumb is almost equal to an inch. |
| Relation | 1 Millimeter = 0.0393701 Inches | 1 Inch = 25.4 Millimeters |
| Formula | 1 Millimeter = Inches x 0.0393701 | 1 Inch = Millimeters x 25.4 |
| Usage | This metric unit is currently defined as the distance the light covers in a given fraction of a second. The unit is currently used to measure very small distances, to roughly measure the size of a wire which is used in a standard paper clip. | The inch is usually used in the US, Canada and the UK as a customary length unit that measures the length of electronic parts, majorly display screens. |
Millimeter to Inches Conversion Table
| MM | Inches | MM to Inches |
| 1 mm | 0.0394 inches | 1 mm into inches = 0.0394 inches |
| 2 mm | 0.0788 inches | 2 mm into inches = 0.0788 inches |
| 3 mm | 0.1182 inches | 3 mm into inches = 0.1182 inches |
| 4 mm | 0.1576 inches | 4 mm into inches = 0.1576 inches |
| 5 mm | 0.197 inches | 5 mm into inches = 0.197 inches |
| 6 mm | 0.2364 inches | 6 mm into inches = 0.2364 inches |
| 7 mm | 0.2758 inches | 7 mm into inches = 0.2758 inches |
| 8 mm | 0.3152 inches | 8 mm into inches = 0.3152 inches |
| 9 mm | 0.3546 inches | 9 mm into inches = 0.3546 inches |
| 10 mm | 0.394 inches | 10 mm into inches = 0.394 inches |
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FAQs
How to convert inches to mm?
To convert inches to mm, multiply the unit by 25.4
How many millimetres are there in 100 inches?
100 inches = 100 * 25.4 = 2540 mm
