CalcBoard / All Unit Converters / Length & Distance

Length & Distance Converter

Convert between miles, kilometres, metres, feet, inches, yards, and nautical miles. Free in your browser — and offline in the CalcBoard app.

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Length is where unit confusion costs the most: a recipe in centimetres, a run measured in miles, lumber sold in feet, and a map scaled in kilometres. All ten units below convert through the metre, which is why the numbers agree no matter which pair you pick.

The factors are not approximations. An inch has been defined as exactly 0.0254 m since the 1959 international yard and pound agreement, which makes a foot exactly 0.3048 m and a mile exactly 1609.344 m. A nautical mile is exactly 1852 m by international definition. Those exact values are what CalcBoard computes with.

Length & Distance Converter

1 Mile = 1.609344 Kilometer
Converted in your browser. Nothing is sent anywhere.

This page’s converter uses ordinary JavaScript numbers, so long results round like any web calculator. CalcBoard’s in-app converter uses exact decimal arithmetic and works with no connection at all.

Common length & distance conversions

Common length & distance conversions for 1, 5 and 100 units
Conversion15100
Mile → Kilometer1.6093448.04672160.9344
Kilometer → Mile0.621371193.10685662.137119
Foot → Meter0.30481.52430.48
Meter → Foot3.280839916.404199328.08399
Inch → Centimeter2.5412.7254
Centimeter → Inch0.393700791.968503939.370079
Yard → Meter0.91444.57291.44
Nautical mile → Kilometer1.8529.26185.2

Every length & distance unit CalcBoard converts

All 10 units in this category, with the exact factor each one uses to reach the base unit (meter). These are the same constants the app computes with.

Every length & distance unit with its conversion factor and tier
UnitIn metersTier
Meter1Free
Kilometer1000Free
Centimeter0.01Free
Millimeter0.001Free
Micrometer0.000001Premium
Mile1609.344Premium
Yard0.9144Premium
Foot0.3048Free
Inch0.0254Free
Nautical mile1852Premium

Convert without a browser

This page needs a connection. The CalcBoard app does the same conversions offline, with exact decimal arithmetic, and puts the converter next to a working calculator — so you can convert a measurement in one panel and immediately use it in a formula in the next, without copying anything by hand.

Free vs. Premium, honestly: the free app includes 2 panels, basic mode, 3 converter categories, and your last 10 history entries — no ads, no time limits. A one-time $2.99 purchase (no subscription) unlocks scientific and programmer modes, up to 8 panels, the shared value tray, all 10 converter categories, full history with search and CSV export, and all themes and button styles.

Frequently Asked Questions

How many kilometres is a mile?
One mile is exactly 1.609344 kilometres, and one kilometre is about 0.621371 miles. The mile is defined as exactly 1609.344 metres, so this conversion is exact rather than rounded.
Is a nautical mile the same as a mile?
No. A nautical mile is 1852 metres exactly — about 1.15 statute miles. It is based on one minute of latitude, which is why it is used for sea and air navigation.
Why does the app charge for some length units?
The free app includes metre, kilometre, centimetre, millimetre, foot, and inch — enough for everyday use. Micrometre, mile, yard, and nautical mile are part of the one-time $2.99 Premium unlock, along with the other seven categories.

Convert offline, in the app

All 79 units, exact decimal maths, alongside a live calculator. Free to download.

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