This converter switches length between metric and imperial units using exact definitions. Enter a value, choose the source and target unit, and see the result immediately alongside other common conversions.
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Result
Enter a value to convert The converted result appears here as you type.
Metres = Value × Factor
Every length unit is defined by its exact size in metres. For example, one inch is exactly 0.0254 metres and one mile is exactly 1609.344 metres.
Result = Metres ÷ Target factor
Divide the metre value by the target unit’s factor. To convert 1 metre to feet: 1 ÷ 0.3048 = 3.280839895 feet.
A height given in metres needs to be shown in feet.
One metre is 3.28084 feet. The exact value is longer, but the display is rounded to the chosen precision.
A road distance in miles needs to be shown in kilometres.
One mile is exactly 1.609344 kilometres by definition.
A length below zero has no physical meaning, so negative values are rejected. Use the temperature converter if you need negative numbers.
The converter uses the international definitions, not rounded approximations: 1 inch = 25.4 mm, 1 foot = 0.3048 m and 1 mile = 1609.344 m.
Internal values keep full precision. Changing the decimal places changes how the result is shown, not the underlying conversion.
One metre is 1 ÷ 0.3048 = 3.280839895 feet. With six decimal places the converter shows 3.28084 ft.
Metric units are based on the metre and powers of ten. Imperial units such as inches, feet, yards and miles have fixed sizes defined in metres, which is what this converter uses.
Yes. A nautical mile is defined as exactly 1852 metres and is included in the unit list.
Only the display changes. The conversion keeps full precision internally and rounds once, to the number of decimal places you select.
No. Lengths are treated as non-negative measurements. Negative values produce a clear error instead of a result.