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.

1 furlong per fortnight = 0.0001663095238 meters per second (approximately).

1 furlong per fortnight = 0.0001663095238 meters per second

About the furlong per fortnight

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.

Sources: Wikipedia: FFF system (furlong per fortnight); Wikipedia: Furlong; Wikipedia: Fortnight

Furlong Per Fortnight conversion chart

1 furlong per fortnight expressed in every other speed unit:

Unit1 furlong per fortnight
Meters Per Second0.0001663095238
Kilometers Per Hour0.0005987142857
Miles Per Hour0.0003720238095
Knots0.0003232798519
Feet Per Second0.0005456349206
Mach4.887230566×10⁻⁷
Speed Of Light5.547488583×10⁻¹³
Centimeters Per Second0.01663095238
Millimeters Per Second0.1663095238
Kilometers Per Second1.663095238×10⁻⁷
Kilometers Per Minute0.000009978571429
Meters Per Minute0.009978571429
Inches Per Second0.006547619048
Feet Per Minute0.03273809524
Miles Per Second1.033399471×10⁻⁷

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