Inches to millimeters converter

Inches to millimeters calculator

The in to millimeters converter will help you convert your inches into millimeters and vice versa.

How to convert inches to mm?

We know that one inch is equal to 25.4 millimeters. You can multiply the amount of inches by 25.4 to convert inches to millimeters.

Millimeters = number of inches × 25.4

Example: You want to know how many millimeters there are in 27 inches. The inches conversion formula looks like this: 27 × 25.4 = 685.8 millimeters.

Inches

Inches unit symbol is in or ″.

Inches is a unit of length in the imperial and US customary systems of measurement.

Inches is used to express:

• Distance traveled

• Speed: inch per second (in/sec).

• Surface area

One inch is equal to 25.4 millimeters

Millimeters

Millimeters unit symbol is mm.

Millimeters is a unit of length in the International System of Units (SI) which is the modern metric system.

Millimeters is used to express:

• Distance traveled

• Speed: millimeters per second (mm/s).

• Surface area

One millimeter is equal to 0.0393700787 inches

Inches into millimeters conversion table