Inches to Millimeters Converter
Convert inches to millimeters instantly with our precise tool. Supports whole numbers, decimals, and fractions (e.g. 1/2, 3/4).
Conversion Result
1 inch =
25.4 mm
| Inches | Millimeters |
|---|---|
| 1/16″ | 1.5875 mm |
| 1/8″ | 3.175 mm |
| 1/4″ | 6.35 mm |
| 1/2″ | 12.7 mm |
| 3/4″ | 19.05 mm |
| 1″ | 25.4 mm |
| 2″ | 50.8 mm |
| 5″ | 127 mm |
| 10″ | 254 mm |
Accurate Inches to Millimeters Conversion
Our inches to mm converter provides instant, precise conversions between these essential measurement units. Whether you’re working on engineering designs, construction projects, or DIY tasks, this tool ensures accurate results every time.
Key Feature: Our converter uniquely handles fractions (like 1/2, 3/4), decimals (0.5), and whole numbers – making it perfect for all your measurement needs.
How to Convert Inches to Millimeters
Converting inches to millimeters is simple with our tool:
- Enter your measurement in inches (whole number, decimal, or fraction)
- Click “Convert” or press Enter
- View the precise millimeter equivalent
- Use the “Reset” button to start a new conversion
Inches to Millimeters Conversion Formula
The conversion from inches to millimeters is based on the international standard:
1 inch = 25.4 millimeters exactly
To convert manually:
- For whole numbers: Multiply inches by 25.4 (2″ × 25.4 = 50.8 mm)
- For fractions: First convert to decimal (1/2″ = 0.5″), then multiply by 25.4 (0.5 × 25.4 = 12.7 mm)
- For decimals: Multiply directly (0.75″ × 25.4 = 19.05 mm)
Common Applications
Inches to millimeter conversion is essential in many industries:
- Engineering: Converting technical drawings between imperial and metric
- Manufacturing: Ensuring precision in part specifications
- Construction: Working with international building standards
- DIY Projects: Following instructions or plans with mixed units
- Education: Teaching measurement conversion concepts
Why Our Converter Stands Out
Unlike basic converters, our tool offers:
- Fraction support: Handles inputs like 3/4″ or 1 1/2″
- Real-time calculation: Results update as you type
- Detailed explanation: Shows the conversion steps
- Reference table: Common conversions at a glance
- Mobile-friendly: Works perfectly on all devices
Measurement Conversion Table
For quick reference, here are common inch to millimeter conversions:
- 1/16 inch = 1.5875 mm
- 1/8 inch = 3.175 mm
- 1/4 inch = 6.35 mm
- 1/2 inch = 12.7 mm
- 1 inch = 25.4 mm
- 12 inches (1 foot) = 304.8 mm