Convert Millimetres per Second to Furlong per Fortnight
Convert Millimetres per Second (mm/s) to Furlong per Fortnight (fur/fn) instantly and accurately.
Conversion Formula
fur/fn = mm/s × 6.012884753
About Millimetres per Second
A millimetre per second (mm/s) is 10⁻³ m/s - the speed of slow industrial mechanisms and recognisable biological motion. FDM 3D printers move at 40-120 mm/s for perimeters and 150-300 mm/s for infill. Garden snails travel 0.5-1.5 mm/s; earthworms 3-5 mm/s. CNC finishing operations run 1-several hundred mm/s. Hydraulic precision slides work at mm/s for surface preparation. Ultrasound particle velocities in soft tissue are also in this range. 1 mm/s = 10⁻³ m/s.
About Furlong per Fortnight
A furlong per fortnight (fur/fn) is a deliberately archaic unit equal to exactly 201.168 ÷ 1,209,600 m/s ≈ 1.663 × 10⁻⁴ m/s - just slightly faster than a garden snail at full creep. One furlong (one-eighth of a mile = 201.168 m) and one fortnight (14 days = 1,209,600 s) are both perfectly legitimate historical measures, but their combination is cherished in physics teaching as a cautionary example of needlessly exotic unit choices. Expressing kinetic energy in kg·fur²/fn² or force in kg·fur/fn² illustrates instantly why the SI was universally adopted. The unit appears in satirical physics papers, recreational mathematics columns, and Terry Pratchett's Discworld novels as the native velocity unit of magical phenomena. The speed of light expressed in furlongs per fortnight is approximately 1.803 × 10¹² fur/fn. Snails travel at roughly 0.5-1 fur/fn; strong tidal rip currents reach 100-200 fur/fn. 1 fur/fn ≈ 1.663 × 10⁻⁴ m/s ≈ 0.599 km/h ≈ 0.372 mph.
Quick Reference Table
| Millimetres per Second (mm/s) | Furlong per Fortnight (fur/fn) |
|---|---|
| 1 mm/s | 6.01288 fur/fn |
| 2 mm/s | 12.0258 fur/fn |
| 5 mm/s | 30.0644 fur/fn |
| 10 mm/s | 60.1288 fur/fn |
| 25 mm/s | 150.322 fur/fn |
| 50 mm/s | 300.644 fur/fn |
| 100 mm/s | 601.288 fur/fn |