Unitly

length conversion

How many inches are in 1 millimeter?

Quick answer, a live calculator, and reference values for converting millimeters to inches.

Main answer
1 millimeter = 0.04 inches
Result
1 millimeter = 0.04 inches

Factor: 0.0393700787402

There are 0.04 inches in 1 millimeter.

1 millimeter equals 0.04 inches. A millimeter is a common length unit for everyday sizing, crafts, and travel. An inch is another length unit you'll often see on rulers, road signs, and product dimensions. To convert any amount, multiply the number of millimeters by 0.0393700787402 to get inches. Results below use standard international conversion factors; round as needed for recipes or construction.
Need the other direction?
Convert inches to millimeters.

Examples

  • 1 millimeter
    0.04 inches
  • 5 millimeters
    0.2 inches
  • 10 millimeters
    0.39 inches
  • 100 millimeters
    3.94 inches

Frequently asked questions

How many inches are in 1 millimeter?
There are 0.04 inches in 1 millimeter.
How do I convert millimeters to inches?
Multiply the millimeters value by 0.0393700787402. You can also type any number into the calculator on this page for an instant result.
Is the millimeters to inches conversion exact?
This page uses internationally recognized conversion factors. Displayed values may be rounded for readability—keep extra decimals when a recipe, blueprint, or lab measurement needs higher precision.

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