Question

How long is 4 cm on a ruler?

Answer 1

4 cm on a ruler is equal to 40 millimeters on the ruler.

Every cm is equal to 10 millimeters.

Each centimeter is equal to 10 millimeters, so if your object measures 4 centimeters long, that's equivalent to 4 × 10 = 40 millimeters. Often, your measurement in millimeters will fall between centimeter marks on the ruler.

Also there are 2.54 cm in every inch of measurement.

And in 4 cm there are 1.5748 inches in the 4 cm.

A centimeter (cm) is a decimal fraction of the meter, the International System of Units (SI) unit of length, approximately equivalent to 39.37 inches.

In 1 foot there are 30.48 cm and in 2 feet there are 60.96 cm.

Answer 2

4cm = 1.575 inches, if that's your question.

Answer 3

There are online tools that can help you with this. For instance, if you're trying to get a sense of how long 4 cm is, you can always check it out using a web-based ruler. It’s pretty convenient, especially if you don't have a physical ruler on hand. You can pull it up on your screen and see exactly how 4 cm looks in real size.