The foot per second
The foot per second (ft/s, fps) equals exactly 0.3048 m/s. It is common in US ballistics (muzzle velocity), engineering (fluid flow, elevator speed), and physics classrooms as an imperial alternative to mph.
Feet per second to Kilometers per hour
1 ft/s = 1.09728 km/h (foot per second → kilometer per hour)
1 ft/s = 1.09728 km/h
1 foot per second equals 1.09728 kilometers per hour. To convert feet per second to kilometers per hour, multiply the foot per second value by 1.09728. For quick reference: 1 ft/s = 1.09728 km/h, 5 ft/s = 5.4864 km/h, 10 ft/s = 10.9728 km/h, 100 ft/s = 109.728 km/h.
Formula
Kilometers per hour = Feet per second × 1.09728Quick
How to convert feet per second to kilometers per hour
Take your value
Start with your value in feet per second.
Multiply by 1.09728
Multiply the foot per second value by 1.09728. This is the exact conversion factor from feet per second to kilometers per hour.
Read the result
The product is your value in kilometers per hour. For example, 5 ft/s × 1.09728 = 5.4864 km/h.
Conversion formula
The exact factor from feet per second to kilometers per hour is 1.09728.
Kilometers per hour = Feet per second × 1.09728
Feet per second to Kilometers per hour conversion table
Fifty common reference values, hand-picked for skim utility. Use the calculator above for any value not listed.
| Feet per second (ft/s) | Kilometers per hour (km/h) |
|---|---|
| 1 ft/s | 1.0973 km/h |
| 2 ft/s | 2.1946 km/h |
| 3 ft/s | 3.2918 km/h |
| 4 ft/s | 4.3891 km/h |
| 5 ft/s | 5.4864 km/h |
| 6 ft/s | 6.5837 km/h |
| 7 ft/s | 7.681 km/h |
| 8 ft/s | 8.7782 km/h |
| 9 ft/s | 9.8755 km/h |
| 10 ft/s | 10.973 km/h |
| 12 ft/s | 13.167 km/h |
| 15 ft/s | 16.459 km/h |
| 18 ft/s | 19.751 km/h |
| 20 ft/s | 21.946 km/h |
| 22 ft/s | 24.14 km/h |
| 25 ft/s | 27.432 km/h |
| 28 ft/s | 30.724 km/h |
| 30 ft/s | 32.918 km/h |
| 32 ft/s | 35.113 km/h |
| 35 ft/s | 38.405 km/h |
| 40 ft/s | 43.891 km/h |
| 45 ft/s | 49.378 km/h |
| 50 ft/s | 54.864 km/h |
| 55 ft/s | 60.35 km/h |
| 60 ft/s | 65.837 km/h |
| 65 ft/s | 71.323 km/h |
| 70 ft/s | 76.81 km/h |
| 75 ft/s | 82.296 km/h |
| 80 ft/s | 87.782 km/h |
| 85 ft/s | 93.269 km/h |
| 90 ft/s | 98.755 km/h |
| 95 ft/s | 104.24 km/h |
| 100 ft/s | 109.73 km/h |
| 110 ft/s | 120.7 km/h |
| 120 ft/s | 131.67 km/h |
| 130 ft/s | 142.65 km/h |
| 140 ft/s | 153.62 km/h |
| 150 ft/s | 164.59 km/h |
| 160 ft/s | 175.56 km/h |
| 180 ft/s | 197.51 km/h |
| 200 ft/s | 219.46 km/h |
| 220 ft/s | 241.4 km/h |
| 250 ft/s | 274.32 km/h |
| 280 ft/s | 307.24 km/h |
| 300 ft/s | 329.18 km/h |
| 350 ft/s | 384.05 km/h |
| 400 ft/s | 438.91 km/h |
| 500 ft/s | 548.64 km/h |
| 700 ft/s | 768.1 km/h |
| 1000 ft/s | 1097.3 km/h |
Real-world reference
A typical handgun muzzle velocity is 800–1,200 ft/s. A falling object reaches about 32 ft/s after one second. In kilometers per hour, that gives you: 1 ft/s = 1.09728 km/h, 10 ft/s = 10.9728 km/h, 100 ft/s = 109.728 km/h.
Frequently asked questions
- How many kilometers per hour are in 1 foot per second?
- 1 foot per second equals 1.09728 kilometers per hour.
- How do I convert feet per second to kilometers per hour?
- Multiply the foot per second value by 1.09728. So x ft/s × 1.09728 = the equivalent in km/h.
- What is 5 feet per second in kilometers per hour?
- 5 feet per second equals 5.4864 kilometers per hour.
- What is 10 feet per second in kilometers per hour?
- 10 feet per second equals 10.9728 kilometers per hour.
- What is 100 feet per second in kilometers per hour?
- 100 feet per second equals 109.728 kilometers per hour.
- How do I convert back from kilometers per hour to feet per second?
- Multiply the kilometer per hour value by 0.911344. For example, 1 km/h = 0.911344 ft/s.
- Is the foot per second bigger than the kilometer per hour?
- Yes. 1 foot per second is larger than 1 kilometer per hour — specifically 1.09728 times larger.
- Are these conversion factors exact?
- The underlying imperial/US unit definitions are exact; the displayed factor (1.09728) is rounded for readability, and the browser computes using IEEE 754 double-precision arithmetic.
About the foot per second and the kilometer per hour
The kilometer per hour
The kilometer per hour (km/h) is the standard speed unit on road signs almost everywhere except the United States and the United Kingdom. To convert to meters per second, divide by 3.6 (since 1 km = 1000 m and 1 h = 3600 s).