Millimeter to Inch Converter
Convert millimeters to inches instantly with our accurate and easy-to-use conversion tool.
Inch
Conversion Formula
Inch = Millimeter × 0.03937Where:
- mm = Millimeter
- in = Inch
About Millimeter
The millimeter (mm) is a unit of lengthin the metric system of measurement.
About Inch
The inch (in) is a unit of lengthin the imperial system of measurement.
How to Convert Millimeter to Inch
To convert from millimeters to inches, use our converter above. Simply enter the value in millimetersand get instant results in inches.
Quick Reference:
- 1 mm = 0.039370 in
- 1 in = 25.400000 mm
Common Millimeter to Inch Conversions
= 0.04 in
= 0.20 in
= 0.39 in
= 0.98 in
= 1.97 in
= 3.94 in
Conversion Reference Table
| Millimeter (mm) | Inch (in) |
|---|---|
| 1 | 0.0394 |
| 2 | 0.0787 |
| 3 | 0.1181 |
| 4 | 0.1575 |
| 5 | 0.1969 |
| 10 | 0.3937 |
| 15 | 0.5906 |
| 20 | 0.7874 |
| 25 | 0.9843 |
| 50 | 1.9685 |
| 75 | 2.9528 |
| 100 | 3.937 |
| 250 | 9.8425 |
| 500 | 19.685 |
| 1,000 | 39.3701 |
Quick reference table showing common millimeters to inches conversions.
Real-World Length Conversions
Running and Athletics
Track events like the 100-meter dash or marathon (26.2 miles). Athletes and coaches use conversions to compare international race distances.
Travel and Navigation
Converting road distances when traveling between countries. Speed limits and road signs may use different units (km/h vs mph).
Construction and Architecture
Building plans may use different units. Converting between feet and meters is essential for international construction projects.
Aviation and Aerospace
Flight altitudes are measured in feet, but distances may be in nautical miles or kilometers depending on the region.
Sports Fields and Courts
Soccer fields (100-130 yards), basketball courts (94 feet), and Olympic pools (50 meters) require conversions for international standards.
Science and Research
Scientific measurements typically use metric units, but may need conversion when collaborating with institutions using different systems.