Millimeter to Mil Conversion - Accurate mm ⇄ mil Calculator

Convert between millimeters (mm) and mils (mil) with precision using standard length measurements

Millimeter to Mil Converter Tool
Enter a value to convert between millimeters and mils with bidirectional conversion (1 mm = 39.3701 mil)
Note: This converter uses standard conversion (1 millimeter = 39.3701 mils). Perfect for precision measurements, manufacturing, and engineering applications.

 Do you need to quickly convert millimeter to mil or the reverse? Our mm ⇄ mil converter provides instant and accurate results. This conversion is especially important in engineering, electronics, printing, and manufacturing, where precise measurements of thickness or spacing are required.

Why Users Love This Millimeter ⇄ Mil Converter

  • Accurate formula: Based on exact SI and imperial relationships.
  • Instant results: Displays answers immediately.
  • Two-way conversion: Works for both mm to mil and mil to mm.
  • Clear output: Shows exact and rounded results.
  • Practical use: Ideal for industry, design, and technical fields.

How to Use the Converter

  1. Enter the value in millimeters or mils.
  2. Select the conversion direction.
  3. View the result instantly.
  4. Save, copy, or share the answer.

What is a Millimeter (mm)?

millimeter (mm) is a unit of length in the metric system. It is commonly used worldwide for small-scale measurements.

Key Facts About Millimeters

  • Exact value: 1 mm = 0.03937 inches.
  • Relationship: 1000 mm = 1 meter.
  • Abbreviation: mm.
  • Usage: Construction, engineering, science, and manufacturing.

What is a Mil?

mil is a unit of length used in the imperial system, primarily in North America. It is equal to one-thousandth of an inch.

Key Facts About Mils

  • Exact value: 1 mil = 0.001 inch.
  • Relationship: 1 mil = 0.0254 mm.
  • Abbreviation: mil.
  • Usage: Electronics, film thickness, coatings, and precision manufacturing.

Millimeter to Mil Conversion Formula

Formula:

mil = mm × 39.3701

Millimeter to Mil Conversion Examples

  • 1 mm to mil
    Step 1: Formula = mil = mm × 39.3701
    Step 2: Substitute = 1 × 39.3701
    Step 3: Result = 39.37 mils
     
  • 5 mm to mil
    Step 1: mil = mm × 39.3701
    Step 2: Substitute = 5 × 39.3701
    Step 3: Result = 196.85 mils
     
  • 10 mm to mil
    Step 1: mil = mm × 39.3701
    Step 2: Substitute = 10 × 39.3701
    Step 3: Result = 393.7 mils

Mil to Millimeter Conversion Formula

Formula:

mm = mil × 0.0254

Mil to Millimeter Conversion Examples

  • 100 mil to mm
    Step 1: Formula = mm = mil × 0.0254
    Step 2: Substitute = 100 × 0.0254
    Step 3: Result = 2.54 mm
     
  • 200 mil to mm
    Step 1: mm = mil × 0.0254
    Step 2: Substitute = 200 × 0.0254
    Step 3: Result = 5.08 mm
     
  • 500 mil to mm
    Step 1: mm = mil × 0.0254
    Step 2: Substitute = 500 × 0.0254
    Step 3: Result = 12.7 mm

Applications of Millimeter and Mil Conversion

  • Electronics: PCB (Printed Circuit Board) spacing and trace thickness.
  • Manufacturing: Coating, sheet metal, and film thickness are often measured in mils.
  • Engineering: Technical drawings and component specifications.
  • Printing: Paper thickness and packaging dimensions.
  • Construction: International projects require conversion between metric and imperial units.

Quick Reference Table for Millimeter ⇄ Mil

Millimeters (mm)

Mils (mil)

Mils (mil)

Millimeters (mm)

1 mm

39.37 mil

100 mil

2.54 mm

5 mm

196.85 mil

200 mil

5.08 mm

10 mm

393.7 mil

500 mil

12.7 mm

25 mm

984.25 mil

1000 mil

25.4 mm

 

Use our millimeter ⇄ mil converter at Digital Calculator for fast, accurate, and reliable results. Perfect for electronics, manufacturing, engineering, and design professionals.

 

Frequently Asked Questions

Published: 9/30/2025