Furlongs Per Fortnight to Meters Per Second (fur/ftn to m/s)

1 furlong per fortnight equals 0.0001663095238 meters per second (rounded).

1 furlong per fortnight = 0.0001663095238 meters per second

How to convert furlongs per fortnight to meters per second

To convert furlongs per fortnight to meters per second, multiply the number of furlongs per fortnight by 0.0001663095238. The factor is rounded to 10 significant digits. To go the other way, multiply meters per second by 6,012.884753 (rounded).

meters per second = furlongs per fortnight × 0.0001663095238

Example: 10 furlongs per fortnight = 0.001663095238 meters per second.

About these units

Furlong Per Fortnight (fur/ftn)

Imperial (British)Traditional unit (still used in some regions)

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

Meter Per Second (m/s)

Metric (SI)Current unit

The SI unit of speed. Walking pace is about 1.4 m/s; a sprinter reaches roughly 10 m/s.

Official standing arrived in 1960, when the CGPM established the SI and made the meter per second the unit for speed and velocity. Before that, feet per second, miles per hour and knots were more common, depending on region and trade. One proposal gave 1 m/s its own name, the benz, after Karl Benz, but it was rejected and never caught on, so the unit is still written as a plain ratio of meter to second.

The meter is now defined by the distance light travels in a vacuum in 1/299,792,458 of a second, and the second by the vibration of caesium atoms, so the meter per second rests on two physical standards. Exactly 3.6 km/h make 1 m/s, and it equals about 2.2369 mph or 1.9438 knots. For scale, sound travels at about 343 m/s in dry air at 20 °C, and Chuck Yeager's Bell X-1 reached about 361 m/s, Mach 1.06, in October 1947. Physics and engineering use the unit almost exclusively.

The meter per second is the reference unit for speed on this site.

Sources: Wikipedia: Metre per second; NIST: the meter and the SI redefinition; Wikipedia: Sound barrier

Related conversions

See all speed units.