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Length

Convert Inch to Millimetre

Written by Rahul Lath

Convert Inch to Millimetre

Convert Inch to Millimetre

Conversion of an inch to millimetre: Inch & millimetre are units of measurement of length and distance in the metric system. 1 inch (in) = 25.4 millimetres (mm). To convert inch to millimetres, multiply the given value in inches by 25.4. The resultant value will be the value in millimetres

Inches


in

Millimeters


mm

What is an Inch?

Inch is a unit of measurement and is denoted as ‘in’ or simply by the symbol “. Some of the common uses include measuring the length of the screen of a smart TV screen, the height of a person, the size of a tyre and so on.

What is a Millimetre?

In the International System of Units (SI), a millimetre is a unit of length equal to one-thousandth of a metre. It is denoted as ‘mm’ in short. 

Common usage:

  • Used to measure the size of the dial of a wristwatch
  • used to measure the size of a diamond
  • Used to measure the size of a coin

How to convert Inch to Millimetre?

To convert the inch to the millimetre, multiply the required inches by 25.4 to get the value in millimetres. As
1 in = 25.4 mm.

The formula to convert inch to millimetre is given below:
X in = X × 25.4 mm
where X is the value of inches.

Examples of Inch to Millimetre conversions

Problem 1: Convert 500 inches to millimetres.

Solution 1:

Step 1: The given inches is 500.
Step 2: To convert 500 inches to millimetres, substitute the given values at the required places in the formula. Hence,
Formula,
X in = X × 25.4 mm
500 in = 25.4 ×500 mm
= 12700 mm
Therefore, 500 inches is 12700 millimetres.

Problem 2: Convert 10 inches to millimetres.

Solution 2:

Step 1: The given inches is 10.
Step 2: To convert 10 inches to millimetres, substitute the values at the required places in the formula. Hence,
X in = X × 25.4 mm
10 in = 10×25.4 mm
= 254 mm
Therefore, 10 inches is 254 millimetres.

Problem 3:  Convert 15 inches to millimetres.
Solution3 :

Step 1: The given inches is 15.
Step 2: To convert 15 inches to millimetres, substitute the values at the required places in the formula. Hence,

X in = X × 25.4 mm
15 in = 15 × 25.4 mm
= 381 mm
Therefore, 15 inches is 381 mm.

Problem 4:  Convert 20 inches to millimetres.
Solution 4:

Step 1: The given inches is 20.
Step 2: To convert 20 inches to millimetres, substitute the values at the required places in the formula. Hence,

X in = X × 25.4 mm
20 in = 20 × 25.4 mm
= 508 mm
Therefore, 20 inches is 508 millimetres.

Problem 5:  Convert 30 inches to millimetres.

Solution 5:

Step 1: The given inches is 30.
Step 2: To convert 30 inches to millimetres, substitute the values at the required places in the formula. Hence,

X in = X × 25.4 mm
30 in = 30 × 25.4 mm
= 762 mm
Therefore, 30 inches is 762 millimetres.

Inch (in) to Millimetre (mm)conversion table

Inch (in)Millimetre (mm)Conversion of  Inch to Millimetre (in to mm)
1 in25.4 mm1 in is 25.4 mm
2 in50.8 mm2 in is 50.8 mm
3 in76.2 mm3 in is 76.2 mm
4 in101.6 mm4 in is 101.6 mm
5 in127 mm5 in is 127 mm
6 in152.4 mm6 in is 152.4 mm
7 in177.8 mm7 in is 177.8 mm
8 in203.2 mm8 in is 203.2 mm
9 in228.6 mm9 in is 228.6 mm
10 in254 mm10 in is 254 mm
11 in279.4 mm11 in is 279.4 mm
12 in304.8 mm12 in is 304.8 mm
13 in330.2 mm13 in is 330.2 mm
14 in355.6 mm14 in is 355.6 mm
15 in381 mm15 in is 381 mm
16 in406.4 mm16 in is 406.4 mm
17 in431.8 mm17 in is 431.8 mm
18 in457.2 mm18 in is 457.2 mm
19 in482.6 mm19 in is 482.6 mm
20 in508 mm20 in is 508 mm
21 in533.4 mm21 in is 533.4 mm
22 in558.8 mm22 in is 558.8 mm
23 in584.2 mm23 in is 584.2 mm
24 in609.6 mm24 in is 609.6 mm
25 in635 mm25 in is 635 mm
26 in660.4 mm26 in is 660.4 mm
27 in685.8 mm27 in is 685.8 mm
28 in711.2 mm28 in is 711.2 mm
29 in736.6 mm29 in is 736.6 mm
30 in762 mm30 in is 762 mm
50 in1270 mm50 in is 1270 mm
100 in2540 mm100 in is 2540 mm
200 in5080 mm200 in is 5080 mm
300 in7620 mm300 in is 7620 mm
400 in10160 mm400 in is 10160 mm
500 in12700 mm500 in is 12700 mm
600 in15240 mm600 in is 15240 mm
700 in17780 mm700 in is 17780 mm
800 in20320 mm800 in is 20320 mm
900 in22860 mm900 in is 22860 mm
1000 in25400 mm1000 in is 25400 mm

Difference between Inch (in) and Millimetre (mm)

Comparison ParametersInch (in)Millimetre (mm)
DefinitionA unit of measurement and is equal to 25.4 millimetres and 2.54 centimetres.In the International System of Units (SI), a millimetre is a unit of length equal to one-thousandth of a metre.
The symbolinmm
Formula1 inch = 25.4 millimetres1mm = 0.001m
Useis Used to measure the length of the screen of a smart T.V, the height of a person, etc.Used to measure the length of tiny objects such as a peanut and the tip of a pencil, etc.

FAQs on the conversion of Inch to Millimetre

How do you convert inches to mm?
To convert the inch to the millimetre, multiply the required inches by 25.4 as
1 in = 25.4 mm.
Formula,
Y in = Y × 25.4

What is 1 inch equal to in mm?
1 in = 25.4 mm

What size are 2 inches in mm?
2 in = 50.8 mm

What is the metric conversion of 1 inch?
The metric conversion of 1 inch to the millimetre is,
1 inch = 25.4 millimetres

What does 25 in convert to in mm?
To convert the inch to the millimetre, multiply the required inches by 25.4 as
1 in = 25.4 mm.
Formula,
Y in = Y × 25.4
Hence 25 in is,
25 in = 25 × 25.4 mm
= 635 mm
Therefore, 25 inches is 635 mm.

Convert 100 inch to millimetre.
To convert 100 inch to millimetre, multiply the required inches by 25.4 as
1 in = 25.4 mm
Formula,
Y in = Y x 25.4
Hence, 100 in is,
100 in = 100 x 25.4 mm
= 2540 mm
Therefore, 100 inches is 2540 mm.

Convert 1000 inch to millimetres.
To convert 1000 inch to millimetre, multiply the required inches by 25.4 as
1 in = 25.4 mm
Formula,
Y in = Y x 25.4
Hence, 1000 in is,
100 in = 1000 x 25.4 mm
= 25400 mm
Therefore, 1000 inches is 25400 mm.

Convert 1/2 inch to mm.
To convert 1/2 inch to millimetre, multiply the required inches by 25.4 as
1 in = 25.4 mm
Formula,
Y in = Y x 25.4
Hence, 1/2 in is,
100 in = 1/2 x 25.4 mm
= 12.7 mm
Therefore, 1/2 inches is 12.7 mm.

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References:
SI Base units

Written by

Rahul Lath

Reviewed by

Arpit Rankwar

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