Inches to millimeters (mm) converter and how to convert.
Precision Length Converter
Convert between inches, millimeters, and other precision units
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Conversion Reference
Inches to Millimeters:
1 inch = 25.4 millimeters (exactly)
Formula: mm = in × 25.4
Millimeters to Inches:
1 millimeter = 0.03937 inches
Formula: in = mm ÷ 25.4
Practical Applications
- Mechanics and engineers use millimeters for precision manufacturing.
- Furniture assembly often requires conversion between inches and millimeters.
- Computer components like screen sizes are often expressed in both units.
- Medical devices and scientific instruments typically use millimeters for accuracy.
Inch
Inch (in or ″) is a unit of length.
One inch is equal to 1/12 of a foot (ft).
One inch is equal to 1/36 of a yard (yd).
One inch is eqaul to 25.4 millimeters (mm).
Millimeter
Millimeter (mm) is a unit of length.
One millimeter is equal to 1/1000 of a meter (m).
One millimeter is equal to 1/10 of a centimeter (cm).
One millimeter is eqaul to 1/25.4 of an inch (in).
How to convert inches to millimeters
1 inch is equal to 25.4 millimeters:
1″ = 25.4mm
The distance in millimeters (mm) is equal to the distance in inches (″) times 25.4:
d(mm) = d(inch) × 25.4
Example
Convert 20 inches to millimeters:
d(mm) = 20″ × 25.4 = 508mm
How many inches in a millimeter
One millimeter is equal to 0.03937 inches:
1mm = 1mm / 25.4mm/in = 0.03937in
How many millimeters in an inch
One inch is equal to 25.4 millimeters:
1in = 25.4mm/in × 1in = 25.4mm
How to convert 10 inches to millimeterss
Multiply 10 inches by 25.4 to get millimeters:
10in = 25.4mm/in × 10in = 254mm
Inches to millimeters conversion table
| Inches (“) | Millimeters (mm) |
|---|---|
| 0.01 ″ | 0.254000 mm |
| 1/64 ″ | 0.396875 mm |
| 1/32 ″ | 0.793750 mm |
| 1/16 ″ | 1.587500 mm |
| 0.1 ″ | 2.540000 mm |
| 1/8 ″ | 3.175 mm |
| 1/4 ″ | 6.35 mm |
| 1/2 ″ | 12.7 mm |
| 1 ″ | 25.4 mm |
| 2 ″ | 50.8 mm |
| 3 ″ | 76.2 mm |
| 4 ″ | 101.6 mm |
| 5 ″ | 127.0 mm |
| 6 ″ | 152.4 mm |
| 7 ″ | 177.8 mm |
| 8 ″ | 203.2 mm |
| 9 ″ | 228.6 mm |
| 10 ″ | 254.0 mm |
| 20 ″ | 508.0 mm |
| 30 ″ | 762.0 mm |
| 40 ″ | 1016.0 mm |
| 50 ″ | 1270.0 mm |
| 60 ″ | 1524.0 mm |
| 70 ″ | 1778.0 mm |
| 80 ″ | 2032.0 mm |
| 90 ″ | 2286.0 mm |
| 100 ″ | 2540.0 mm |
