How many inches are in one millimeter?
One millimeter is about 0.0393701 inches.
Convert Millimeter (mm) to Inch (in) instantly.
Choose how you want the answer displayed.
1mm=0.03937in
| Quick Conversion | Converted |
|---|---|
| 1 mm | 0.03937 in |
| 5 mm | 0.19685 in |
| 10 mm | 0.393701 in |
| 25 mm | 0.984252 in |
| 50 mm | 1.968504 in |
| 100 mm | 3.937008 in |
| 500 mm | 19.685039 in |
| 1,000 mm | 39.370079 in |
A millimeter is a metric length unit equal to 0.001 meters.
Millimeters became standard in technical, medical, manufacturing, and product measurement because they suit small details.
Same length, two labels
1 mm = 0.03937 in
An inch (in or ") is a customary and imperial unit of length.
One inch is equal to 1/12 of a foot (ft), 1/36 of a yard (yd), and exactly 2.54 centimeters (cm).
Mathematically, inch (in or ") = millimeter (mm) multiplied by the conversion factor shown below.
1 mm = 0.03937 in
1 in = 25.4 mm
1 mm x 0.03937 = 0.03937 in
The distance in inch (in or ") is the distance in millimeter (mm) multiplied by 0.03937.
distance(in) = distance(mm) x 0.03937
Or:
in = mm x 0.03937
Formula: value × 0.0393700787402
Example: 15 mm = 0.590551 in
Convert 25 millimeter to inch:
25 mm x 0.03937 = 0.984252 in
Convert 250 millimeter to inch:
250 mm x 0.03937 = 9.84252 in
Precision note: Use 1 in = 25.4 mm exactly. Avoid rounding early when the result is used for fit, clearance, machining, or compatibility.
1 mm = 0.03937 in
1 in = 25.4 mm
If you are starting with inch instead, use the inches to mm page.
| Millimeter [mm] | Inch [in or "] |
|---|---|
| 0.1 mm | 0.003937 in |
| 0.5 mm | 0.019685 in |
| 2 mm | 0.07874 in |
| 3 mm | 0.11811 in |
| 15 mm | 0.590551 in |
| 20 mm | 0.787402 in |
| 30 mm | 1.181102 in |
| 75 mm | 2.952756 in |
| 150 mm | 5.905512 in |
| 250 mm | 9.84252 in |
| 750 mm | 29.527559 in |
| 1,500 mm | 59.055118 in |
One millimeter is about 0.0393701 inches.
One inch is exactly 25.4 millimeters.
10 mm is about 0.3937 inches, which is slightly larger than 3/8 inch.