Millimeters to Inches
Convert Millimeters to Inches instantly.
Inches
0.039370
How to Convert Millimeters to Inches
To convert millimeters to inches, multiply by 0.0393701 (or divide by 25.4). One inch equals exactly 25.4 millimeters, making this an exact conversion. Millimeters are used throughout engineering, machining, manufacturing, and product specifications worldwide. Americans working with international specifications, tool sizes, bolt diameters, or material thicknesses frequently need to convert between millimeters and inches.
Millimeters to Inches Reference Chart
Common conversions: 1 mm = 0.0394 in · 5 mm = 0.197 in · 10 mm (1 cm) = 0.394 in · 25 mm = 0.984 in · 25.4 mm = 1 in exactly · 50 mm = 1.969 in · 100 mm = 3.937 in · 305 mm = 12.008 in (≈ 1 foot).
Frequently Asked Questions
How many inches are in a millimeter?
One millimeter equals 0.0393701 inches.
How many mm in an inch?
One inch equals exactly 25.4 millimeters.