Inches to mm converter

Inch

Inch (in or ″) is a unit of length.
One inch is equal to 1/12 of a foot (ft).
One inch is equal to 1/36 of a yard (yd).
One inch is eqaul to 25.4 millimeters (mm).

Millimeter

Millimeter (mm) is a unit of length.
One millimeter is equal to 1/1000 of a meter (m).
One millimeter is equal to 1/10 of a centimeter (cm).
One millimeter is eqaul to 1/25.4 of an inch (in).

How to convert inches to millimeters

1 inch is equal to 25.4 millimeters:

1″ = 25.4mm

The distance in millimeters (mm) is equal to the distance in inches (″) times 25.4:

d_(mm) = d_(inch) × 25.4

Example

Convert 20 inches to millimeters:

d_(mm) = 20″ × 25.4 = 508mm

How many inches in a millimeter

One millimeter is equal to 0.03937 inches:

1mm = 1mm / 25.4mm/in = 0.03937in

How many millimeters in an inch

One inch is equal to 25.4 millimeters:

1in = 25.4mm/in × 1in = 25.4mm

How to convert 10 inches to millimeterss

Multiply 10 inches by 25.4 to get millimeters:

10in = 25.4mm/in × 10in = 254mm

Inches to millimeters conversion table