Convert feet per second to miles per hour with precision
100 ft/s = 68.18 mph
| ft/s | mph | ft/s | mph |
|---|---|---|---|
| 10 ft/s | 6.82 mph | 150 ft/s | 102.27 mph |
| 25 ft/s | 17.05 mph | 200 ft/s | 136.36 mph |
| 50 ft/s | 34.09 mph | 300 ft/s | 204.55 mph |
| 75 ft/s | 51.14 mph | 500 ft/s | 340.91 mph |
| 100 ft/s | 68.18 mph | 1000 ft/s | 681.82 mph |
Converting feet per second (ft/s) to miles per hour (mph) is essential for ballistics, projectile analysis, sports science, and engineering applications. This comprehensive guide covers everything you need for accurate ft/s to mph conversion.
Feet per second (ft/s) is commonly used for measuring projectile velocities, water flow rates, and short-distance speeds, while miles per hour (mph) is the standard for automotive and general speed measurements in the imperial system.
The conversion from ft/s to mph uses the following formula:
This conversion factor comes from the relationship between feet, miles, seconds, and hours.
The conversion factor 0.681818 is derived from:
ft/s provides more precision for high-speed, short-duration events. It's also more convenient for calculations involving physics equations where time is measured in seconds.
Both are exactly the same - 15/22 = 0.681818... The fraction form is sometimes preferred in engineering for exact calculations without rounding errors.
1 ft/s = 0.681818 mph = 0.3048 m/s = 1.097 km/h. Understanding these relationships helps in various conversion scenarios.
It depends on context: 10 ft/s is fast for walking, 100 ft/s is fast for sports balls, 1,000 ft/s is typical for bullets, and 3,000+ ft/s is high-velocity rifle rounds.