Convert Kilometres per Hour to Feet per Second

Convert Kilometres per Hour (km/h) to Feet per Second (ft/s) instantly and accurately.

Kilometres per Hour (km/h)
Feet per Second (ft/s)

Conversion Formula

ft/s = km/h × 0.9113444153

About Kilometres per Hour

A kilometre per hour (km/h) = 1/3.6 m/s - the universal road speed unit across most of the world. Walking pace ~5-6 km/h; jogging 9-12 km/h; elite marathon runners average 20-21 km/h. High-speed rail (TGV, Shinkansen, ICE) 250-350 km/h; TGV record 574.8 km/h. Category 5 hurricane ≥252 km/h; Thrust SSC land speed record 1,228 km/h (Mach 1.02). 1 km/h = 0.2778 m/s = 0.6214 mph = 0.5400 kn.

About Feet per Second

A foot per second (ft/s) = exactly 0.3048 m/s - the primary speed unit in US ballistics, hydraulics, and gas dynamics. .308 Winchester muzzle velocity ~2,750 ft/s; 9mm pistol 1,200-1,400 ft/s; .50 BMG 2,910 ft/s. Speed of sound at sea level 1,116 ft/s. River channel mean velocities 0.5-6 ft/s; NFPA sprinkler pipe flows also in ft/s. 1 ft/s = 0.3048 m/s = 1.09728 km/h = 60 ft/min.

Quick Reference Table

Kilometres per Hour (km/h)Feet per Second (ft/s)
1 km/h0.911344 ft/s
2 km/h1.82269 ft/s
5 km/h4.55672 ft/s
10 km/h9.11344 ft/s
25 km/h22.7836 ft/s
50 km/h45.5672 ft/s
100 km/h91.1344 ft/s

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