MM to Inches Converter
Convert millimeters (mm) to inches with our free and accurate length converter. Perfect for engineering, construction, and DIY projects.
Calculate Your MM to Inches Converter
How to Convert Millimeters to Inches
To convert millimeters to inches, multiply the millimeter value by 0.0393701. This conversion is based on the fact that 1 millimeter equals 0.0393701 inches.
Inches = Millimeters × 0.0393701
Example:
To convert 10 millimeters to inches:
- Inches = 10 mm × 0.0393701
- Inches = 0.393701 in
- Inches ≈ 0.3937 in
How to Convert Inches to Millimeters
To convert inches to millimeters, multiply the inch value by 25.4. This conversion is based on the fact that 1 inch equals 25.4 millimeters exactly.
Millimeters = Inches × 25.4
Example:
To convert 1 inch to millimeters:
- Millimeters = 1 in × 25.4
- Millimeters = 25.4 mm
Common MM to Inches Conversions
| Millimeters (mm) | Inches (in) |
|---|---|
| 1 mm | 0.0394 in |
| 5 mm | 0.1969 in |
| 10 mm | 0.3937 in |
| 25.4 mm | 1 in |
| 50 mm | 1.9685 in |
| 100 mm | 3.9370 in |
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Frequently Asked Questions
To convert millimeters to inches, multiply the millimeter value by 0.0393701. For example, to convert 10 mm to inches: 10 mm × 0.0393701 = 0.393701 inches.
To convert inches to millimeters, multiply the inch value by 25.4. For example, to convert 1 inch to mm: 1 inch × 25.4 = 25.4 mm.
1 inch is exactly 25.4 millimeters. This is a precise conversion defined in the International System of Units.
The conversion between millimeters and inches is important because different countries use different measurement systems. The United States primarily uses inches (imperial system), while most other countries use millimeters (metric system). This conversion is especially important in fields like engineering, manufacturing, construction, and product design.
100 mm = 100 × 0.0393701 = 3.93701 inches, which is approximately 3.94 inches.
5 inches = 5 × 25.4 = 127 mm.
Millimeters (mm) and centimeters (cm) are both units of length in the metric system. The difference is that 1 centimeter equals 10 millimeters. To convert from cm to mm, multiply by 10. To convert from mm to cm, divide by 10.
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