Length Converter
Convert km, miles, meters, feet, inches and more.
What is a Length Converter?
A length converter transforms a measurement expressed in one unit (say, kilometers) into the equivalent value in another unit (say, miles). It's one of the most common conversions people perform — whether you're planning a road trip in a country that uses miles, reading a European recipe in centimeters, or sizing up a piece of furniture listed in inches.
How to Use This Converter
Type the number you want to convert into the From field, select the source unit, and choose the target unit on the right. The converted value updates live as you type. Swap units freely — all conversions are exact, based on the SI-defined meter.
Common Length Conversions
- 1 kilometer = 0.621371 miles
- 1 mile = 1.609344 kilometers
- 1 meter = 3.28084 feet
- 1 foot = 0.3048 meters (exactly)
- 1 inch = 2.54 centimeters (exactly)
- 1 yard = 0.9144 meters
Metric vs. Imperial
Most of the world uses the metric system (millimeters, centimeters, meters, kilometers) because it scales in neat powers of ten. The United States, the United Kingdom (informally), and a handful of other countries still use imperial units (inches, feet, yards, miles) for everyday measurements. This tool handles both directions seamlessly.
Where You'll Use Length Conversions
Travelers converting road distances, students solving physics homework, DIY enthusiasts buying lumber, runners tracking race distances, and international shoppers comparing product dimensions all need a quick, reliable length converter. Because this tool runs entirely in your browser, conversions are instant — no waiting on a network request.
Accuracy
Every conversion uses the official conversion factors defined by the International System of Units (SI). We store results to eight decimal places, more than enough precision for any practical purpose.