Inches to Millimeters Conversion Chart
Quick Answer
1 in = 25.4 mm
Formula: Millimeter = Inch x 25.4
Formula verifiedLive calculation
To (Millimeter)
mm
What is millimeter?
A millimeter (mm) is one-thousandth of a meter, the SI base unit of length. It is used for small, precise measurements and converts directly to inches.
Formulain = mm ÷ 25.4
Key conversions
- 1 inch = 25.4 mm (exact)
- 1 mm ≈ 0.0393701 inches
- 10 mm = 1 centimeter (cm)
- 1,000 mm = 1 meter (m)
Standards, method, and review
Values are calculated from the shared conversion-factor library. Exact defined relationships are preserved; displayed results are rounded only for readability.
Reviewed by All Unit Conversions Editorial Team. Updated .
Inches to Millimeters Conversion Table
| Inch (in) | Millimeter (mm) |
|---|---|
| 0.25 in | 6.35 mm |
| 0.5 in | 12.7 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 |
| 18 in | 457.2 mm |
| 24 in | 609.6 mm |
| 36 in | 914.4 mm |
| 48 in | 1219.2 mm |
| 60 in | 1524 mm |
| 72 in | 1828.8 mm |
| 100 in | 2540 mm |
Values are calculated from the shared conversion-factor library. Exact defined relationships are preserved; displayed results are rounded only for readability.
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Inches to Millimeters Conversion Chart FAQs
Common questions about the inches to millimeters conversion chart.