What Size Is Three Centimeters?

What size is three centimetres? Consider the tip of your thumb to get a sense of how big 3 centimetres (cm) is. The first joint in the tip is typically separated by 1 inch, or 2.54 centimetres, on average. In turn, 3 centimetres is just a little bit longer than the typical thumb from the first knuckle to the tip, which means that 1 3/16 inches is roughly equivalent to 3 centimetres.

A dollar bill folded in half lengthwise, which measures around 3.2 centimetres, and the diameter of a quarter, which is 2.5 centimetres across, are two further visual examples that will help you understand how big 3 cm is in length.

Misha Khatri
Misha Khatri is an emeritus professor in the University of Notre Dame's Department of Chemistry and Biochemistry. He graduated from Northern Illinois University with a BSc in Chemistry and Mathematics and a PhD in Physical Analytical Chemistry from the University of Utah.


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