What is Millimetre?
The millimetre, sometimes known as the millimetre, is a metric unit of length equal to one thousandth of a metre, which is the SI base unit of length. As a result, a metre is made up of 1000 millimetres. A centimetre is made up of 10 millimetres. 1,000 micrometres or 10,00,000 nanometres equal one millimetre.
Both millimetres and inches are used to measure length in maths. The millimetre is defined by the SI units, which are used in the international system of measures, whereas the inches are used in the US customary system of measurements.
What are Inches?
In the imperial and US systems of measurement, the inch (abbreviated as inch) is a unit of length. It is supposed to be the same as 136 yards or 12 of 1 foot. This comes from the Latin term “twelfth.”
An inch is a measurement unit that is 1/36 of a yard in British Imperial and US Customary measurement systems.
Relationship between Millimetre and Inch
The following is the mathematical connection between millimetres and inches:
0.0393701 inch = 1 millimetre
25.4 millimetres = 1 inch
Formula for Converting Millimetres into Inches
Here is the formula we can use to make mm to inches conversion:
1 Millimetre = Inches x 0.0393701
Conversion Table of Millimetre into Inches
Millimetres (mm) |
Inches (“)
(decimal) |
Inches (“)
(fraction) |
0.01 mm |
0.0004 ″ |
0 ″ |
0.1 mm |
0.0039 ″ |
0 ″ |
1 mm |
0.0394 ″ |
3/64 ″ |
2 mm |
0.0787 ″ |
5/64 ″ |
3 mm |
0.1181 ″ |
1/8 ″ |
4 mm |
0.1575 ″ |
5/32 ″ |
5 mm |
0.1969 ″ |
13/64 ″ |
6 mm |
0.2362 ″ |
15/64 ″ |
7 mm |
0.2756 ″ |
9/32 ″ |
8 mm |
0.3150 ″ |
5/16 ″ |
9 mm |
0.3543 ″ |
23/64 ″ |
10 mm |
0.3937 ″ |
25/64 ″ |
20 mm |
0.7874 ″ |
25/32 ″ |
30 mm |
1.1811 ″ |
1 3/16 ″ |
40 mm |
1.5784 ″ |
1 37/64 ″ |
50 mm |
1.9685 ″ |
1 31/32 ″ |
60 mm |
2.3622 ″ |
2 23/64 ″ |
70 mm |
2.7559 ″ |
2 3/4 ″ |
80 mm |
3.1496 ″ |
3 5/32 ″ |
90 mm |
3.5433 ″ |
3 35/64 ″ |
100 mm |
3.9370 ″ |
3 15/16 ″ |
Examples:
Example 1: Convert 2.5 Millimetre into Inches
Solution: Using the formula, we will get:
2.5 mm = (2.5 x 0.0393701) = 0.0984252 inches
Hence, 25 mm is equal to 0.0984252 inches.
Example 2: Convert 320 Millimetre to Inches
Solution: 320 mm = (320 x 0.0393701) = 12.5984 inches
Hence, 320 mm is equal to 12.5984 inches.
Example 3: Convert 10 Millimetre to Inches
Solution: 10 mm = (10 x 0.0393701) = 0.393701 inches
Hence, 10 mm is equal to 0.393701 inches.
Example 4: Convert 11 Millimetre into inches
Solution: 11 mm = (11 x 0.0393701) = 0.433071 inches
Hence, 110 mm is equal to 0.433071 inches.
Example 5: Convert 1500 Millimetre to Inches
Solution: 1500 mm = (1500 x 0.0393701) = 59.0551 inches
Hence, 150 mm is equal to 59.0551 inches.