Length Unit Converter
Convert values between common length units.
Converted value
Reverse conversion
Conversion summary
Why use this tool
01Measure distances and lengths across metric and imperial units in the browser.
Length Unit Converter handles the common distance and length units used in everyday work.
It is designed for fast one-off conversions without any setup.
How to use
02Quick checks before you copy
03Confirm the input is the format you intended.
Scan the result before using it in a document, URL, config, or message.
Copy only the output you need.
FAQ
04Which units are supported?
The tool covers eight categories: Length (mm to mi), Weight/Mass (mg to short ton), Temperature (°C, °F, Kelvin), Area (mm² to km², including acres), Volume (ml to US gallon), Speed (m/s, km/h, mph, knots, ft/s), and Data Size (bit to TB in both SI decimal and IEC binary scales). All conversions happen instantly in the browser with no server round-trip.
Can I enter decimal values?
Yes. Decimal values are fully supported for all unit conversions.
How precise are the results?
Results are shown to 6 significant figures.
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