12 Centimeter to Millimeter
Convert 12 (twelve) Centimeters to Millimeters (cm to mm) with our conversion calculator.
12 Centimeters to Millimeters equals 120.00 mm.
To convert 12 centimeters (cm) to millimeters (mm), you use the fact that 1 centimeter equals 10 millimeters. Since the metric system is decimalbased, converting between units within this system often involves either multiplying or dividing by powers of ten. This particular conversion is straightforward because moving from a larger unit (cm) to a smaller unit (mm) means multiplication. Thus, the calculation for converting 12 cm to mm is done by multiplying 12 by 10, which equals 120 mm.
This calculation is based on the basic principle of unit conversion within the metric system, making it approachable and relatively simple. It starts with the recognition that each centimeter comprises 10 millimeters. Therefore, to determine how many millimeters are in a certain number of centimeters, you multiply the number of centimeters by 10. In this case, multiplying 12â€”the given number of centimetersâ€”by 10 gives the result of 120 millimeters. This simple multiplication yields the conversion and gives a clear answer that 12 centimeters is equivalent to 120 millimeters.
Here are 7 items that are approximately 12 cm in length, along with a simple outline after each:

A standard pencil:
 Commonly used for writing or drawing.
 Length is roughly 12 cm when unsharpened.

A large smartphone:
 Modern smartphones can be around 12 cm long, diagonally.
 Used for communication, entertainment, and productivity.

A small ruler:
 Specifically, a 15 cm ruler has a length that includes a segment which is 12 cm.
 Useful for drawing lines or measuring short distances.

A CD case:
 The width or height of a standard CD case is about 12 cm.
 Used to store and protect CDs.

A tube of toothpaste:
 A small or travelsized tube might measure around 12 cm long.
 Essential for oral hygiene.

A paperback book:
 The height of a smallsized paperback can be close to 12 cm.
 Used for reading and entertainment.

A kitchen spoon:
 The length of a standard kitchen spoon can be roughly 12 cm.
 Used for stirring or serving food.