| Unit | Equals | Description |
|---|---|---|
| 1 km | 1000 m | Metric: Kilometer/Kilometer |
| 1 m | 100 cm | Metric Base Unit: Meter |
| 1 cm | 10 mm | Metric: Centimeter |
| 1 mm | 1000 μm | Metric: Millimeter |
| 1 μm | 1000 nm | Metric: Micrometer |
| 1 in | 2.54 cm | Imperial: Inch |
| 1 ft | 12 in = 30.48 cm | Imperial: Foot |
| 1 yd | 3 ft = 91.44 cm | Imperial: Yard |
| 1 mi | 1760 yd = 1.609 km | Imperial: Mile |
| 1 nmi | 1.852 km | Nautical: Nautical Mile |
| 1 Li (Chinese mile) | 500 m | Traditional Chinese: Li (Market System) |
| 1 Zhang (Chinese unit) | 10/3 m ≈ 3.33 m | Traditional Chinese: Zhang (Market System) |
| 1 Chi (Chinese foot) | 1/3 m ≈ 33.33 cm | Chinese Traditional: Chi (Market System) |
| 1 Cun (Chinese inch) | 1/30 m ≈ 3.33 cm | Chinese Traditional: Cun (Market System) |
Metric Units:International System of Units (SI), based on the meter. Kilometer, centimeter, millimeter, etc. are multiples or fractions of the meter. Metric units use a decimal system, making conversions easy.
Imperial Units:Mainly used in countries like the USA and UK. Includes inch, foot, yard, mile, etc. 1 inch= 2.54is precisely defined as 2.54 centimeters.
Chinese Traditional Units:Market system length units. 1 market chi= 1/3equals 1 meter, 1 market cun= 1/30equals 1 meter. Note: The lengths of ancient chi and cun differ from the modern market system.
Usage Tips:This tool supports real-time conversion. After entering a value, corresponding values in all units will be displayed automatically. Suitable for engineering calculations, architectural design, international trade, and more.