Inch to Millimeter Converter 2025 | Inch to MM | Free Tool

Inch to Millimeter Converter

Convert inches to millimeters instantly with our accurate 2025 calculator. Perfect for precision engineering, manufacturing, and technical specifications.

Quick Inch to Millimeter Conversion

Enter inches and get instant results in millimeters

MM to Inch Inch to CM CM to Inch Feet to Inches CM to MM

Inch to Millimeter Calculator

Enter value and get instant conversion

in
mm

Inch to Millimeter Conversion 2025

Converting inches to millimeters is essential for precision engineering, manufacturing, and technical specifications in 2025. This imperial to metric conversion enables accurate communication for engineers, machinists, and manufacturing professionals working with precision tolerances and international standards.

Our 2025 converter provides instant and accurate conversions from inches to millimeters, essential for engineers, machinists, manufacturing professionals, and precision specialists working with technical specifications. One inch equals exactly 25.4 millimeters.

How to Convert Inches to Millimeters

Method 1: Multiplication Formula

1

Take your inch value

Example: 1 inch

2

Multiply by 25.4

1 × 25.4 = 25.4

3

Get your result

Result: 25.4 millimeters

Understanding Units

1

1 Inch = 25.4 Millimeters

Exact imperial to metric conversion

2

Inch is Imperial

Common in US for manufacturing specifications

3

Millimeter is Metric

International standard for precision measurement

Conversion Formula

Millimeters = Inches × 25.4
Imperial to metric precision conversion

Inch to Millimeter Conversion Table

Inches Millimeters Manufacturing Use
1/16 in 1.588 mm Small drill bit
1/8 in 3.175 mm Sheet metal thickness
1/4 in 6.350 mm Bolt diameter
1/2 in 12.700 mm Pipe diameter
3/4 in 19.050 mm Wrench size
1 in 25.400 mm Standard inch
2 in 50.800 mm Steel beam thickness
4 in 101.600 mm Pipe length
6 in 152.400 mm Component width

Quick Conversion Tips for Manufacturing & Engineering

  • 1 inch = 25.4 millimeters (exact conversion)
  • Multiply inches by 25.4 to get millimeters
  • Essential for precision manufacturing and machining
  • Used for technical drawings and specifications