# 55 Millimeter to Inch

Convert 55 (fifty five) Millimeters to Inches (mm to in) with our conversion calculator.

**55 Millimeters to Inches equals 2.1654 in.**

To convert 55 mm to inches, the conversion factor between millimeters and inches needs to be applied. The conversion factor is that 1 inch is equal to 25.4 millimeters. This means, to convert millimeters into inches, the number of millimeters has to be divided by 25.4. Therefore, the calculation to convert 55 mm into inches is as follows:

\([55 \, \text{mm} \times \left(\frac{1 \, \text{inch}}{25.4 \, \text{mm}}\right) = \frac{55}{25.4} \, \text{inches}.]\)

Performing this division, 55 divided by 25.4 equals approximately 2.165 inches. This means that 55 millimeters is equivalent to about 2.165 inches when converted. This conversion method is widely used in various fields, including engineering, manufacturing, and science, to convert measurements from the metric system, which is based on units of ten, to the imperial system, which is commonly used in the United States.

Items that are approximately 55 mm in length include:

**A standard USB flash drive**:- Compact, often around 55 mm in length, used for data storage and transfer.

**A small pocket knife**:- Collapsed length around 55 mm, portable for everyday carry.

**A large paperclip**:- Usually slightly smaller, but a jumbo paperclip can be approximately 55 mm.

**A stack of about 22 US pennies**:- Each penny is about 2.5 mm thick; stacked, they would be close to 55 mm.

**A lipstick tube**:- Standard sizes range, with some near 55 mm in height, convenient for purse or pocket.

**A matchbox**:- Small size for holding matches, approximately 55 mm in length.

**A AA battery**:- Slightly shorter, but for perspective, a AA battery is about 50 mm long, so imagine something just a bit longer.