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Mile Conversion Calculator

Convert miles to kilometers, meters, feet, yards, inches, or nautical miles and back.

Formula shown0 inputs definedUpdated Dec 2025By CalcuTotal TeamFree, no sign-up

Quick Summary

Use this when you need:

Convert running distances from miles to kilometers
Translate road distances into meters for mapping and GIS work
Compare nautical miles and statute miles for navigation planning

You’ll get:Distance

How this is calculated

Formula:

km = mi × 1.609344; m = mi × 1609.344

In plain language:

Miles convert through meters using the exact definition 1 mi = 1609.344 m. From meters, the calculator converts to km, ft, yd, in, or nautical miles.

The formula is always visible so you can verify the math and explain your numbers to anyone who asks.

What these terms mean

Distance

Distance used in the calculation.

When to use this calculator

Convert running distances from miles to kilometers
Translate road distances into meters for mapping and GIS work
Compare nautical miles and statute miles for navigation planning

Last updated: December 26, 2025

Mile conversion calculator explained

Miles are common in US road distances and running plans. Metric work uses meters and kilometers. This calculator converts miles into several distance units, including nautical miles for navigation.

How the conversion works

The mile is defined exactly:

1\\,\\text{mi} = 1609.344\\,\\text{m}

So miles to kilometers is:

\\text{km} = \\frac{\\text{mi} \\times 1609.344}{1000} = 1.609344 \\times \\text{mi}

Units and conversions

Unit	Symbol	Relation
Mile	mi	$1\\,\\text{mi} = 1609.344\\,\\text{m}$
Kilometer	km	$1\\,\\text{km} = 1000\\,\\text{m}$
Foot	ft	$5280\\,\\text{ft} = 1\\,\\text{mi}$
Nautical mile	NM	$1\\,\\text{NM} = 1852\\,\\text{m}$

Worked examples

Marathon distance: 26.2 mi to km
$\\text{km} = 1.609344 \\times 26.2 = 42.164813\\,\\text{km}$
Result: 42.164813 km.
5 km to miles
$\\text{mi} = \\frac{5000}{1609.344} = 3.106855\\,\\text{mi}$
Result: 3.106855 mi.

Tips and pitfalls

Use nautical miles only for marine and aviation contexts; they do not match statute miles.
For race planning, round miles to three decimals when you convert from km; it keeps split math stable.
Feet and yards are helpful for short distances; miles get awkward below a few hundred feet.

References and further reading

Frequently Asked Questions

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Calculator info

Version:: v1.0.0
Last reviewed:: Dec 26, 2025
Sensitivity:: low
References:: 2

Last updated: December 26, 2025

Mile conversion calculator explained

Miles are common in US road distances and running plans. Metric work uses meters and kilometers. This calculator converts miles into several distance units, including nautical miles for navigation.

How the conversion works

The mile is defined exactly:

1\\,\\text{mi} = 1609.344\\,\\text{m}

So miles to kilometers is:

\\text{km} = \\frac{\\text{mi} \\times 1609.344}{1000} = 1.609344 \\times \\text{mi}

Units and conversions

Unit	Symbol	Relation
Mile	mi	$1\\,\\text{mi} = 1609.344\\,\\text{m}$
Kilometer	km	$1\\,\\text{km} = 1000\\,\\text{m}$
Foot	ft	$5280\\,\\text{ft} = 1\\,\\text{mi}$
Nautical mile	NM	$1\\,\\text{NM} = 1852\\,\\text{m}$

Worked examples

Marathon distance: 26.2 mi to km
$\\text{km} = 1.609344 \\times 26.2 = 42.164813\\,\\text{km}$
Result: 42.164813 km.
5 km to miles
$\\text{mi} = \\frac{5000}{1609.344} = 3.106855\\,\\text{mi}$
Result: 3.106855 mi.

Tips and pitfalls

Use nautical miles only for marine and aviation contexts; they do not match statute miles.
For race planning, round miles to three decimals when you convert from km; it keeps split math stable.
Feet and yards are helpful for short distances; miles get awkward below a few hundred feet.

Quick Summary

Calculator Tool

How this is calculated

What these terms mean

Distance

When to use this calculator

Mile conversion calculator explained

How the conversion works

Units and conversions

Worked examples

Tips and pitfalls

References and further reading

Frequently Asked Questions

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Distance Converter

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Meter to Mile Converter

Was this calculator helpful?

Found an error?

Calculator info

Mile conversion calculator explained

How the conversion works

Units and conversions

Worked examples

Tips and pitfalls

References and further reading

Frequently Asked Questions

Related Calculators

Distance Converter

Kilometers to Miles Calculator

Imperial Calculator

Kilometer Calculator

Kilometer to Meter Converter

Meter to Mile Converter

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