Convert Knots per second to Miles per hour per second

Convert Knots per second (kn/s) to Miles per hour per second (mph/s) instantly and accurately.

Conversion Formula

mph/s = kn/s × 1.150779448

About Knots per second

The knot per second (kn/s) equals 1852/3600 m/s² ≈ 0.5144 m/s², used in aviation and maritime operations where speed is measured in knots. Aircraft carrier catapult launches accelerate an F/A-18 from 0 to ~150 kn in 2-2.5 s, giving 60-75 kn/s ≈ 31-39 m/s². A commercial jet rejected takeoff from V1 (~145 kn) to rest in ≈25 s decelerates at 5-6 kn/s ≈ 2.6-3.1 m/s². 1 kn/s = 463/900 m/s² ≈ 5.25 × 10⁻² g₀.

About Miles per hour per second

The mile per hour per second (mph/s) equals exactly 0.44704 m/s², the natural acceleration unit for road vehicles in the US and UK where speed is measured in mph. A 0-60 mph time of 2.0 s (Tesla Model S Plaid) gives 30 mph/s ≈ 13.4 m/s²; a typical family car at 8.5 s gives 7.1 mph/s ≈ 3.2 m/s². Emergency braking for Amtrak trains requires at least 26 mph/s ≈ 11.6 m/s². 1 mph/s = 0.44704 m/s² (exact) ≈ 4.56 × 10⁻² g₀.

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