12 Inches to Millimeters

12 inches (1 foot) equals exactly 304.8 millimeters.

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How to use this tool

Enter inches in the fields above.
Results update instantly as you type — or click Calculate.
Read your millimeters and the full breakdown beneath it.

Convert 12 inches — one full foot — to millimeters for metric engineering work.

Frequently asked questions

How do I convert inches to millimeters?: Multiply the number of inches by 25.4 to get millimeters.