Inches to Millimeters Converter
Convert inches to millimeters instantly. 1 in = 25.4 mm. Includes the formula, examples and a table of common values.
Formula
mm = in × 25.4
1 in → 25.4 mm
Conversion table
| in | mm |
|---|---|
| 1 in | 25.4 mm |
| 2 in | 50.8 mm |
| 3 in | 76.2 mm |
| 4 in | 101.6 mm |
| 5 in | 127 mm |
| 6 in | 152.4 mm |
| 7 in | 177.8 mm |
| 8 in | 203.2 mm |
| 9 in | 228.6 mm |
| 10 in | 254 mm |
| 12 in | 304.8 mm |
| 15 in | 381 mm |
Popular conversions
- 1 in → 25.4 mm
- 2 in → 50.8 mm
- 3 in → 76.2 mm
- 4 in → 101.6 mm
- 5 in → 127 mm
- 6 in → 152.4 mm
- 7 in → 177.8 mm
- 8 in → 203.2 mm
- 9 in → 228.6 mm
- 10 in → 254 mm
- 12 in → 304.8 mm
- 15 in → 381 mm
- 20 in → 508 mm
- 25 in → 635 mm
- 30 in → 762 mm
- 40 in → 1,016 mm
- 50 in → 1,270 mm
- 60 in → 1,524 mm
- 70 in → 1,778 mm
- 75 in → 1,905 mm
- 80 in → 2,032 mm
- 90 in → 2,286 mm
- 100 in → 2,540 mm
- 150 in → 3,810 mm
- 200 in → 5,080 mm
- 250 in → 6,350 mm
- 300 in → 7,620 mm
- 400 in → 10,160 mm
- 500 in → 12,700 mm
- 1,000 in → 25,400 mm
Reverse conversion
Other conversions
- Inches → Centimeters
- Centimeters → Millimeters
- Inches → Feet
- Meters → Millimeters
- Kilometers → Millimeters
- Inches → Meters
- Inches → Kilometers
- Inches → Yards
Frequently asked questions
How do I convert Inches to Millimeters?
Use this formula: mm = in × 25.4. For example, 1 in → 25.4 mm.
How many millimeters are in 1 inche?
1 in = 25.4 mm.
How many inches are in 1 millimeter?
1 mm = 0.0393701 in.
Is this conversion exact?
Results are rounded to six significant digits; the conversion factor itself is exact or very precise for these units.