Convert miles to inches
1 mi = 63360 in
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How many inches are in a mile?
One mile is 63360 inches. To convert any amount, multiply by 63360. Going the other way, one inch is 0.0000157828283 miles.
What is the formula to convert mi to in?
Multiply the mile figure by 63360. So in = mi × 63360. For a quick mental estimate, multiplying by about 63360 gets you within a percent or so, which is close enough for most everyday purposes.
What does a mile actually look like?
One mile is a comfortable 20-minute walk. The statute mile is exactly 1,609.344 metres, a consequence of the inch being fixed at 25.4 mm in 1959. It remains the road unit in the US and UK.
And what is a inch?
One inch is roughly the width of an adult thumb. The inch has been exactly 25.4 millimetres since 1959. Screen sizes, pipe diameters and tyre rims are still specified in inches almost universally.
Is this conversion exact?
Yes. Since the 1959 international yard and pound agreement, the imperial and metric systems are related by exact definitions rather than measurements — the inch is exactly 25.4 mm and the pound exactly 0.45359237 kg. Everything derived from those, including this conversion, is therefore exact. Round at the end rather than partway through, since rounding mi before converting introduces an error the conversion then multiplies.
About mi to in
How to convert miles to inches
Multiply by 63360. One mile is 63360 inches, and one inch is 0.0000157828283 miles.
in = mi × 63360
Worked example
10 mi = 633600 in. For a sense of scale, one mile is a comfortable 20-minute walk, and one inch is roughly the width of an adult thumb.
About the mile
The statute mile is exactly 1,609.344 metres, a consequence of the inch being fixed at 25.4 mm in 1959. It remains the road unit in the US and UK.
About the inch
The inch has been exactly 25.4 millimetres since 1959. Screen sizes, pipe diameters and tyre rims are still specified in inches almost universally.
Quick reference
| miles | inches |
|---|---|
| 1 mi | 63360 in |
| 2 mi | 126720 in |
| 5 mi | 316800 in |
| 10 mi | 633600 in |
| 25 mi | 1584000 in |
| 50 mi | 3168000 in |
| 100 mi | 6336000 in |
| 1000 mi | 63360000 in |
Getting it right
This conversion is exact by definition, so the only limit on accuracy is how many digits you keep. Round at the end rather than partway through — rounding mi to a whole number before converting introduces an error that the conversion then multiplies.
Other length conversions
Convert inches back to miles, or pick any other pair with the full unit converter. Related: mi to km, mi to m, mi to cm.