Convert Millimeters to Inches
Convert Millimeters (mm) to Inches (in) instantly and accurately.
Conversion Formula
in = mm × 0.03937007874
About Millimeters
A millimeter (mm) is one thousandth of a meter, making it the smallest unit commonly used in everyday measurements. To visualize this, a credit card is about 1 mm thick, and a paperclip wire is roughly 1 mm in diameter. Millimeters are essential in engineering, manufacturing, and medicine for precise measurements. Rainfall is measured in millimeters, with 1 mm representing a very light drizzle. Most rulers and measuring tapes include millimeter markings for accuracy.
About Inches
The inch (in) is a unit of length primarily used in the United States, Canada, and the United Kingdom. Historically, an inch was defined as the width of a man's thumb, but today it's precisely defined as 2.54 centimeters. Common examples include: a quarter coin is about 1 inch in diameter, a standard smartphone is roughly 6 inches tall, and most computer screens are measured diagonally in inches. The inch is divided into fractions like 1/2, 1/4, 1/8, and 1/16 for precision measurements.
Quick Reference Table
| Millimeters (mm) | Inches (in) |
|---|---|
| 1 mm | 0.0393701 in |
| 2 mm | 0.0787402 in |
| 5 mm | 0.19685 in |
| 10 mm | 0.393701 in |
| 25 mm | 0.984252 in |
| 50 mm | 1.9685 in |
| 100 mm | 3.93701 in |