How to convert mm to in
Use the formula inches = millimetres × 0.0393701. Type any value in the box above and the answer updates instantly.
Convert millimetres to inches instantly. Handy for engineering, woodworking and DIY measurements.
Frequently asked questions
How many inches is 1 mm?
1 millimetre equals about 0.03937 inches.
How many inches is 25 mm?
25 millimetres equals about 0.984 inches, close to 1 inch.
How many mm in an inch?
1 inch equals exactly 25.4 millimetres.