Length Converter — Free Online Tool
Convert between mm, cm, m, km, inch, foot, yard and mile in real time.
Result
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About Length Converter
The Length Converter switches measurements between metric units like millimeters, centimeters, meters, and kilometers and imperial units like inches, feet, yards, and miles. Type a value and the converted length appears instantly, along with the formula used so you can see exactly how the result was reached.
From DIY projects and sewing to travel distances, engineering drawings, and homework, length conversions come up constantly. This tool runs entirely in your browser, delivering precise results in real time without sending any data to a server.
How to Use Length Converter
- Enter the length you want to convert into the Value field.
- Pick the starting unit, such as meter, in the From dropdown.
- Pick the target unit, such as foot, in the To dropdown.
- See the converted length right away and copy it if needed.
Key Features
Convert between 8 length units across metric and imperial
Real-time results that update while you type
Swap button to flip the from and to units
Displays the conversion formula for transparency
Processes everything locally for full privacy
Copy the result to your clipboard instantly
Frequently Asked Questions
How many centimeters are in an inch?
One inch equals exactly 2.54 centimeters. This is the internationally agreed definition, so converting inches to centimeters always uses this fixed factor.
How do I convert kilometers to miles?
Divide the number of kilometers by 1.609344, or multiply by 0.621371. For example, 10 kilometers equals about 6.21 miles.
How many feet are in a meter?
One meter equals about 3.28084 feet. To go the other way, one foot equals exactly 0.3048 meters.
How many feet are in a mile?
One mile equals 5,280 feet, or 1,760 yards, which is exactly 1,609.344 meters.