Inches to Millimeters Conversion Calculator

Convert inches to millimeters quickly and easily with our free online calculator.

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About this Converter

This free inches to millimeters converter provides quick and accurate conversions between imperial and metric length measurements. Simply enter a value in inches and get the equivalent in millimeters instantly.

How to Convert Inches to Millimeters

To convert from inches to millimeters, use the conversion calculator above. The calculator uses the precise conversion ratio automatically.

Common Conversions

  • 1 inch = 25.4 millimeters
  • 2 inches = 50.8 millimeters
  • 6 inches = 152.4 millimeters
  • 12 inches = 304.8 millimeters (1 foot)
  • 0.1 inches = 2.54 millimeters

How to Use

  1. Enter the number of inches in the input field
  2. Select your desired units from the dropdowns if needed
  3. The result in millimeters will be calculated automatically

About the Conversion

The inch to millimeter conversion bridges the imperial and metric measurement systems. Inches are commonly used in the United States for measurements, while millimeters are part of the metric system used worldwide. This conversion is essential for international manufacturing, hardware specifications, and engineering drawings.