Convert Inches per Second to Feet per Second
Convert Inches per Second (in/s) to Feet per Second (ft/s) instantly and accurately.
Conversion Formula
ft/s = in/s × 0.08333333333
About Inches per Second
An inch per second (in/s) = exactly 0.0254 m/s = 25.4 mm/s. Professional reel-to-reel audio tape runs at 15 or 30 IPS; consumer tape decks at 1⅞ IPS; VHS at ~1.3 IPS. High-speed CNC axes rapid at 800-1,200 in/min ≈ 13-20 in/s. Pneumatic cylinder speeds and robotic end-effector approach speeds in US assembly plants are programmed in in/s. 1 in/s = 0.0254 m/s = 5 ft/min.
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
| Inches per Second (in/s) | Feet per Second (ft/s) |
|---|---|
| 1 in/s | 0.0833333 ft/s |
| 2 in/s | 0.166667 ft/s |
| 5 in/s | 0.416667 ft/s |
| 10 in/s | 0.833333 ft/s |
| 25 in/s | 2.08333 ft/s |
| 50 in/s | 4.16667 ft/s |
| 100 in/s | 8.33333 ft/s |