Precise conversion from inches to mm with step-by-step calculation
Identify the conversion factor: 1 inch = 25.4 mm
Multiply the value in inches by the conversion factor:
Real-world examples to help visualize this measurement
Tablets typically range from 7-12 inches in screen size.
A standard ruler is 12 inches (1 foot) long.
Learn about these measurement units and how they compare
An inch is a unit of length in the imperial and United States customary systems. It's defined as exactly 25.4 millimeters.
A millimeter is a unit of length in the International System of Units (SI). It equals one thousandth (1/1000) of a meter, the SI base unit of length.
The relationship between millimeters and inches is fixed by international agreement.