Miles Per Hour to Furlongs Per Fortnight (mph to fur/ftn)
1 mile per hour equals 2,688 furlongs per fortnight exactly.
How to convert miles per hour to furlongs per fortnight
To convert miles per hour to furlongs per fortnight, multiply the number of miles per hour by 2,688. This factor is exact. To go the other way, multiply furlongs per fortnight by 0.0003720238095 (rounded).
furlongs per fortnight = miles per hour × 2,688
Example: 10 miles per hour = 26,880 furlongs per fortnight.
About these units
Mile Per Hour (mph)
Exactly 0.44704 m/s. The unit for road speeds in the US, UK and a few other countries.
Early British motoring law is the best window into this unit. The 1861 Locomotive Act set a limit of 10 mph for light locomotives. The 1865 Red Flag Act cut it to 4 mph in the country and 2 mph in towns, with a person walking ahead with a flag. The Locomotives on Highways Act of 1896 raised it to 14 mph, and the Motor Car Act of 1903 to 20 mph. In 1931 all limits for cars were abolished, and 30 mph in built-up areas returned in 1935.
The mile per hour combines the mile, set at 5,280 feet in Elizabeth I's reign, with the hour, and it equals exactly 0.44704 m/s or 1.609344 km/h. The United Kingdom and United States use it on roads, along with several smaller countries, mostly territories or former territories of those two, and the US, Canada and Ireland use it for rail. Sports such as cricket, tennis and baseball quote ball speeds in it. Aviation and shipping prefer knots, about 0.869 of one mph each.
1 mile per hour = 0.44704 meters per second (exactly).
Sources: Wikipedia: Miles per hour; Wikipedia: Speed limits in the United Kingdom; Wikipedia: Mile
Furlong Per Fortnight (fur/ftn)
About 0.000166 m/s. A joke unit made of two archaic units, a standard classroom example of a deliberately absurd speed.
Furlong per fortnight is a deliberately silly speed, made from two obsolete English units. Furlong combines Old English words for furrow and long, the distance a team of oxen could plough without resting, and it is now fixed at 201.168 m. Fortnight descends from Old English for fourteen nights and equals 1,209,600 seconds.
Dividing one by the other gives about 1.663 x 10^-4 m/s, or 0.1663 mm/s. That is nearly 1 cm/min and roughly the speed of the tip of a short minute hand. The unit belongs to the humorous FFF system and turns up in classroom examples of dimensional analysis. In it, the speed of light is about 1.8026 x 10^12 furlongs per fortnight, which checks against 299,792,458 divided by 1.663 x 10^-4.
1 furlong per fortnight = 0.0001663095238 meters per second (approximately).
Sources: Wikipedia: FFF system (furlong per fortnight); Wikipedia: Furlong; Wikipedia: Fortnight
Related conversions
- Furlongs per fortnight to miles per hour (reverse)
- Miles per hour to meters per second
- Miles per hour to kilometers per hour
- Miles per hour to knots
- Miles per hour to feet per second
- Miles per hour to Mach
- Miles per hour to speed of light
- Miles per hour to centimeters per second
- Miles per hour to millimeters per second
- Miles per hour to kilometers per second
- Miles per hour to kilometers per minute
- Miles per hour to meters per minute
- Miles per hour to inches per second
- Meters per second to furlongs per fortnight
- Kilometers per hour to furlongs per fortnight
- Knots to furlongs per fortnight
See all speed units.