Length Converter

Enter a length, choose the unit you have and the unit you want.

Updated October 27, 2026

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<iframe src="/embed/en/unit-converters/length-converter/" width="480" height="640" title="Length Converter" loading="lazy" style="border:0;max-width:100%"></iframe>
<script>window.addEventListener('message',function(event){if(event.origin!==''||!event.data||event.data.type!=='calc-embed-height')return;var f=document.getElementsByTagName('iframe');for(var i=0;i<f.length;i++){if(f[i].contentWindow===event.source){f[i].style.height=event.data.height+'px';}}});</script>

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Formula

result = value × (metres per from-unit) ÷ (metres per to-unit)

Exact definitions used: 1 in = 0.0254 m, 1 ft = 0.3048 m, 1 yd = 0.9144 m, 1 mi = 1609.344 m, 1 nmi = 1852 m.

Worked example

Convert 100 cm to inches: 100 m / 100 = 1 m, and 1 m / 0.0254 = 39.370079 in.

Frequently asked questions

How many kilometres are in a mile?

One international mile is exactly 1.609344 kilometres, so 5 miles is 8.04672 km.

How many centimetres are in an inch?

One inch is defined as exactly 2.54 centimetres, so 10 inches is 25.4 cm.

How many feet are in a metre?

One metre is 1 / 0.3048 = 3.28084 feet, so 2 metres is about 6.5617 feet.

What is a nautical mile?

A nautical mile is exactly 1852 metres. It is used at sea and in the air, so 10 nautical miles is 18.52 km.

How we calculate

Length Converter

Formula

Worked example

Frequently asked questions

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