How to Convert Inches to MM (Includes Chart)
A millimeter to inches conversion chart provides a convenient reference for converting measurements from millimeters to inches.
It allows users to easily determine the equivalent inch values for precise measurements, facilitating accurate conversions in various fields such as engineering, construction, manufacturing, and especially small engine assembly.
Measuring tight tolerances and finding the right size replacement parts is part of the job for a small engine mechanic wit the right tools. When you need to convert between metric and standard, a measurement chart is a time saver.
If you need to swap sockets or wrenches to their closest metric or standard equivalent, try the socket size conversion chart instead.
| Metric | Inches (APROX. SIZE) | Inches (EXACT SIZE) |
|---|---|---|
| 1mm | 1/25 Inch | 0.03937 Inches |
| 2mm | 1/16 Inch | 0.07874 Inches |
| 3mm | 3/32 Inch | 0.11811 Inches |
| 4mm | 1/8 Inch | 0.15748 Inches |
| 5mm | 3/16 Inch | 0.19685 Inches |
| 6mm | Just under 1/4 Inch | 0.23622 Inches |
| 7mm | Just above 1/4 Inch | 0.27559 Inches |
| 8mm | 5/16 Inch | 0.31496 Inches |
| 9mm | Just under 3/8 Inch | 0.35433 Inches |
| 10mm | Just above 3/8 Inch | 0.39370 Inches |
| 11mm | 7/16 Inch | 0.43307 Inches |
| 12mm | Just under 1/2 Inch | 0.47244 Inches |
| 13mm | Just above 1/2 Inch | 0.51181 Inches |
| 14mm | 9/16 Inch | 0.55118 Inches |
| 15mm | Just under 5/8 Inch | 0.59055 Inches |
| 16mm | 5/8 Inch | 0.62992 Inches |
| 17mm | Just under 11/16 Inch | 0.66929 Inches |
| 18mm | Just over 11/16 Inch | 0.70866 Inches |
| 19mm | Just under 3/4 Inch | 0.74803 Inches |
| 20mm | Just over 3/4 Inch | 0.78740 Inches |
| 21mm | Just under 13/16 Inch | 0.82677 Inches |
| 22mm | Just over 13/16 Inch | 0.86614 Inches |
| 23mm | Just under 15/16 Inch | 0.90551 Inches |
| 24mm | Just over 15/16 Inch | 0.94488 Inches |
| 25mm | Just under 1 Inch | 0.98425 Inches |
Table of Contents
What size is 13 mm in inches?
To convert millimeters to inches, you can divide the measurement in millimeters by 25.4, since there are 25.4 millimeters in one inch.
Therefore, to convert 13 mm to inches: 13 mm / 25.4 = 0.5118 inches (rounded to four decimal places). So, 13 mm is approximately 0.5118 inches.
How many mm is 1 ⁄ 2 inch?
To convert 1/2 inch to millimeters: 1/2 inch * 25.4 mm = 12.7 mm
So, 1/2 inch is equal to 12.7 mm.
Is 12 mm the same as half inch?
No, 12 mm is not the same as half an inch.
12 mm is approximately 0.4724 inches, while half an inch is exactly 0.5 inches. The two measurements are close in value, but not exactly the same.
Do these conversions help with wrenches?
If you need to convert between wrench sizes you should use a wrench conversion chart instead.