Kilometer (km)
One thousand meters; the standard road-distance unit in metric countries.
Result
1 kilometer = 1,000,000 millimeters
Kilometer at a glance
| Unit name | Kilometer (plural: kilometers) |
|---|---|
| Symbol | km |
| Quantity measured | Length |
| Measurement system | Metric |
| Also known as | kilometre, kilometres, km, klick, klicks |
| Definition exact? | Yes — exact by definition |
1 kilometer in other length units
| Unit | 1 km equals |
|---|---|
| Nanometer | 1,000,000,000,000 nm |
| Micrometer | 1,000,000,000 µm |
| Millimeter | 1,000,000 mm |
| Centimeter | 100,000 cm |
| Decimeter | 10,000 dm |
| Meter | 1,000 m |
| Inch | 39,370.0787 in |
| Foot | 3,280.8399 ft |
| Yard | 1,093.6133 yd |
| Mile | 0.621371192 mi |
| Nautical mile | 0.539956803 nmi |
| Angstrom | 10,000,000,000,000 Å |
| Mil | 39,370,078.7 mil |
| Fathom | 546.806649 ftm |
| Rod | 198.838782 rd |
| Chain | 49.7096954 ch |
| Furlong | 4.97096954 fur |
| League | 0.207123731 lea |
| Astronomical unit | 6.68458712 × 10⁻⁹ au |
| Light-year | 1.05700083 × 10⁻¹³ ly |
| Parsec | 3.24077929 × 10⁻¹⁴ pc |
Popular kilometer conversions
Frequently asked questions
- What is a kilometer?
- One thousand meters; the standard road-distance unit in metric countries.
- What is the symbol for the kilometer?
- The symbol for the kilometer is km. It measures length.
- How many millimeters are in a kilometer?
- 1 kilometer = 1,000,000 millimeters.
- How many centimeters are in a kilometer?
- 1 kilometer = 100,000 centimeters.
- How many meters are in a kilometer?
- 1 kilometer = 1,000 meters.