Convert Inches to Millimeters
Convert Inches(inch) to Millimeters(mm) or vice versa.
Related "inch" Conversion Units
Convert inch with other distance converter.
What is Inches to Millimeters Conversion?
Inches (in) and millimeters (mm) are units of length, but they belong to different measurement systems. Inches are part of the imperial system (used in the US), while millimeters are metric (used almost everywhere else!). This converter helps you switch between them.
Think of it like translating between two languages. You're expressing the *same* length, just using different "words" (units).
Inches to Millimeters Formula
Millimeters = Inches × 25.4
Example: 2in × 25.4 = 50.8 mm
So, a ruler that's 2 inches long is 50.8 millimeters long.
This is the key: 1 inch is exactly equal to 25.4 millimeters. That number, 25.4, is the magic number you need to remember for this conversion!
Why use this conversion?
Knowing how to convert inches to millimeters is super useful in many situations:
- Working with Tools and Materials
Imagine you're building something, and the instructions are in millimeters, but your tape measure is in inches. You'll need to convert!
- Understanding Product Sizes
Many products, especially electronics, have dimensions listed in both inches and millimeters. Converting helps you visualize the size. For example, a phone screen size might be given in inches, but the precise internal components are measured in millimeters.
- Science and Engineering
In science and engineering, millimeters are often used for very precise measurements. Converting allows you to work with data in different units.
How to Convert:
It's easy! Just remember the key number (25.4).
Inches to Millimeters (in to mm)
Multiply the number of inches by 25.4.
Example: You have a piece of wood that's 5 inches long. To find the length in millimeters: 5 inches * 25.4 = 127 mm.
Millimeters to Inches (mm to in)
Divide the number of millimeters by 25.4.
Example: A screw is 10 mm long. To find the length in inches: 10 mm / 25.4 ≈ 0.39 inches.
Of course, you can always use our converter at the top for a quick calculation!
| Inch | Millimeter |
|---|---|
| 0.01 Inch | 0.25 Millimeter |
| 0.1 Inch | 2.54 Millimeter |
| 1 Inch | 25.40 Millimeter |
| 2 Inch | 50.80 Millimeter |
| 3 Inch | 76.20 Millimeter |
| 5 Inch | 127.00 Millimeter |
| 10 Inch | 254.00 Millimeter |
| 20 Inch | 508.00 Millimeter |
| 50 Inch | 1270.00 Millimeter |
| 100 Inch | 2540.00 Millimeter |
| 1000 Inch | 25400.00 Millimeter |
| 10000 Inch | 254000.00 Millimeter |
| 100000 Inch | 2540000.00 Millimeter |