Convert inches to miles
Converting inches to miles is a common length task, whether you are checking a recipe, a spec sheet, a travel distance or a homework problem. Since 1 in equals 0.0000157828 mi, the math is a single multiplication — and this page does it for you instantly, with the formula, a table of common values and answers to the questions people ask most.
Exact factor
How to convert inches to miles
To convert inches to miles, multiply the number of inches by 0.0000157828. For example, 10 in × 0.0000157828 = 0.000157828 mi.
mi = in × 0.0000157828
- Write down the value in inches you want to convert.
- Multiply it by 0.0000157828 (the exact in→mi factor).
- The result is your value in miles. Check it below with the converter or the table.
Conversion table
Common values of inches and their equivalents in miles:
| in | mi |
|---|---|
| 1 | 0.0000157828 |
| 2 | 0.0000315657 |
| 3 | 0.0000473485 |
| 4 | 0.0000631313 |
| 5 | 0.0000789141 |
| 10 | 0.000157828 |
| 20 | 0.000315657 |
| 25 | 0.000394571 |
| 50 | 0.000789141 |
| 100 | 0.00157828 |
| 250 | 0.00394571 |
| 500 | 0.00789141 |
About these units
Inch (in). An inch is a unit of the imperial and US customary systems, legally defined as exactly 25.4 millimeters since 1959. It is used for screen sizes, tools and construction in the United States.
Mile (mi). The international mile is defined as exactly 1,609.344 meters, or 5,280 feet. It is the standard road distance unit in the United States and the United Kingdom.
Frequently asked questions
How do I convert inches to miles?
To convert inches to miles, multiply the number of inches by 0.0000157828. For example, 10 in × 0.0000157828 = 0.000157828 mi. Or skip the math: type the value into the converter at the top of this page and the result updates instantly.
How many miles are in 1 inch?
1 in = 0.0000157828 mi. That is the fixed relationship used by this converter and by international standards.
How many inches are in 1 mile?
1 mi = 63,360 in. If you are converting in the opposite direction, use our Mile to Inch converter for the dedicated table and FAQ.
Is the inches to miles conversion exact?
Yes. Both units are defined by international agreement, so the factor of 0.0000157828 is exact. Displayed results are rounded to 6 significant digits only for readability.
What is inch used for?
An inch is a unit of the imperial and US customary systems, legally defined as exactly 25.4 millimeters since 1959. It is used for screen sizes, tools and construction in the United States.