Precise conversion from mm to inches with step-by-step calculation
Identify the conversion factor: 1 mm = 0.03937 inches
Multiply the value in millimeters by the conversion factor:
Real-world examples to help visualize this measurement
Modern smartphones are typically 7-10 mm thick.
A standard pencil has a diameter of about 7-8 mm.
Learn about these measurement units and how they compare
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.
An inch is a unit of length in the imperial and United States customary systems. It's defined as exactly 25.4 millimeters.
The relationship between millimeters and inches is fixed by international agreement.