A centimeter is a metric unit used to measure length. 1 centimeter is equal to 10 millimeters or 0.01 meter. A cheerio is typically the size of 1 c...

A common conversion is 1 in = 2.54 cm. Thus, 3 cm is greater than 1 inch. In fact, 3 cm is approximately 1.18 in, which is indeed bigger than 1 inch.

1 cm is very different from 1 inch. A centimeter is a metric unit, while an inch is an imperial unit. 1 inch = 2.54 cm.