Length Converter
Convert length measurements between metric, imperial, and nautical units.
Length Converter
Convert length measurements between metric, imperial, and nautical units.
About Length Converter
Enter once and see every supported unit
Enter a value and choose the source unit, then the page converts it into metric units such as kilometers, meters, decimeters, centimeters, and millimeters, plus mile, yard, foot, inch, and nautical mile. Each result is shown as a separate card so you can compare the scale quickly.
Local browser math with copyable results
The conversion uses the unit factors from the shared unit library, converts through meters as the base unit, and formats cards with up to seven significant digits. Tap a result card or its copy button to copy the displayed value; empty or invalid input shows placeholder results instead of a copyable conversion.
FAQ
Common questions and answers about this topic.
How do I use the length converter?
Choose the unit you are starting with, then enter zero or a positive number. The page shows all ten supported conversions at once, and you can select any result row to copy the displayed value.
How do I convert centimeters to inches?
Divide the number of centimeters by 2.54. For example, 10 cm is about 3.937008 inches; enter 10, choose centimeters as the source unit, and read the inch row.
How do I convert meters to feet?
Multiply meters by about 3.28084. For example, 2 m is about 6.56168 ft; choose meters as the source unit and read the foot row.
What is the difference between a mile and a nautical mile?
One mile equals 1.609344 km, while one nautical mile equals 1.852 km. Choose mi for miles or nmi for nautical miles; they are different units and should not be used interchangeably.
Which length units are supported?
The converter supports kilometer (km), meter (m), decimeter (dm), centimeter (cm), millimeter (mm), mile (mi), yard (yd), foot (ft), inch (in), and nautical mile (nmi).
Why are converted results rounded?
Results use up to 7 significant digits so very large and very small values remain readable. Selecting a result row copies the same displayed value, including that rounding.