A furlong is 660 feet.
Furlongs to Kilometers Converter — fur to km
Convert Furlong (fur) to Kilometer (km) using the exact conversion factor (1 furlong = 0.201168 kilometer). See the formula, worked examples, conversion table, history, and common uses.
Furlongs to Kilometers converter
Converter
Length Converter
Convert SI, imperial, US customary, astronomical, scientific, and historical length units.
Context values
Some unit families need one extra value for a physically accurate result.
Kilometer is 1000 meter units.
Result = input x 201.168 / 1000.
Length uses the meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Furlongs to Kilometers
Furlong and Kilometer both measure length. Specifically: A furlong is 660 feet, and kilometer is 1000 meter units.
Formula
kilometers = furlongs × 0.201168
This factor comes from each unit's defined relationship to the category's base unit: 1 furlong equals 201.168 base units, and 1 kilometer equals 1000 base units, so dividing one by the other gives the direct furlong-to-kilometer factor of 0.201168.
Simple example
1 fur × 0.201168 = 0.201168 km
1 furlong = 0.201168 kilometers.
Real-world example
10 fur × 0.201168 = 2.01168 km
10 furlongs = 2.01168 kilometers.
Conversion table
| Furlong (fur) | Kilometer (km) |
|---|---|
| 1 fur | 0.201168 km |
| 5 fur | 1.00584 km |
| 10 fur | 2.01168 km |
| 21.0975 fur | 4.24414188 km |
| 42.195 fur | 8.48828376 km |
| 100 fur | 20.1168 km |
Reverse conversion: Kilometer to Furlong
0.201168 km × 4.970969538 = 1 fur
0.201168 kilometers = 1 furlong.
furlongs = kilometers × 4.9709695379
For a page dedicated to this direction, see Kilometer to Furlong.
Understanding the Furlong (fur)
A furlong is 660 feet.
Understanding the Kilometer
Kilometer (km) measures distance. A kilometer is 1,000 meters — the meter is the SI base unit of length. It is classified as a SI derived (metric prefix) unit.
Where it's used: Standard road, distance, and mapping unit in nearly every country except the United States
Uses of the Kilometer today
- Road signage, speed limits, and vehicle odometers outside the US
- Geographic and mapping distances
- Endurance sports (marathons are measured in kilometers internationally, though the marathon distance itself is a fixed value in both systems)
History of the Kilometer
The meter was defined during the French Revolutionary metric reforms as one ten-millionth of the distance from the North Pole to the Equator along a meridian through Paris. 'Kilo-' is simply the SI prefix for 1,000, making the kilometer a direct decimal multiple.
The meter itself has been redefined several times as measurement precision improved — from a physical platinum-iridium bar (1889) to a krypton-86 wavelength (1960) to its current definition (1983) as the distance light travels in a fixed fraction of a second.
Historical origin. Kilometer was not the invention of a single named person; it developed through the process described above.
Kilometer — sources
- BIPM — The metre (SI base unit) — Current definition and history of the meter.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many kilometers are in 1 furlong?
1 furlong equals 0.201168 kilometers, using the exact defined conversion factor rather than an estimate.
How do I convert furlong to kilometer?
Multiply the furlong value by 0.201168. The converter above does this instantly to whatever precision you set.
How do I convert kilometer back to furlong?
Use the reverse factor: 1 kilometer equals 4.970969538 furlongs. You can also use the swap control in the converter above to flip the direction instantly.
What is a furlong?
Furlong (fur) is a unit of length.
What is a kilometer?
Kilometer (km) measures distance. A kilometer is 1,000 meters — the meter is the SI base unit of length. It is classified as a SI derived (metric prefix) unit.
Is the furlong to kilometer conversion exact?
Yes. Both furlong and kilometer are defined by fixed standards rather than physical artifacts, so the factor of 0.201168 used above is exact to as many digits as you choose to display.