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Speed • NIST Exact

Kilometers per Hour → Feet per Second

km/h → ft/s

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NIST Exact

Based on U.S. National Institute of Standards

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Kilometers per Hour to Feet per Second Formula

To convert from Kilometers per Hour to Feet per Second, you can use the following formula:

Feet per Second = Kilometers per Hour × NaN

This means you need to multiply your Kilometers per Hour value by NaN to get the equivalent value in Feet per Second.

km/h → ft/s Reference Table

km/h ft/s
0.001 km/h 0.0009113444153 ft/s
0.002 km/h 0.001822688831 ft/s
0.003 km/h 0.002734033246 ft/s
0.004 km/h 0.003645377661 ft/s
0.005 km/h 0.004556722076 ft/s
0.006 km/h 0.005468066492 ft/s
0.007 km/h 0.006379410907 ft/s
0.008 km/h 0.007290755322 ft/s
0.009 km/h 0.008202099738 ft/s
0.01 km/h 0.009113444153 ft/s
0.02 km/h 0.01822688831 ft/s
0.03 km/h 0.02734033246 ft/s
0.04 km/h 0.03645377661 ft/s
0.05 km/h 0.04556722076 ft/s
0.06 km/h 0.05468066492 ft/s
0.07 km/h 0.06379410907 ft/s
0.08 km/h 0.07290755322 ft/s
0.09 km/h 0.08202099738 ft/s
0.1 km/h 0.09113444153 ft/s
0.2 km/h 0.1822688831 ft/s
0.3 km/h 0.2734033246 ft/s
0.4 km/h 0.3645377661 ft/s
0.5 km/h 0.4556722076 ft/s
0.6 km/h 0.5468066492 ft/s
0.7 km/h 0.6379410907 ft/s
0.8 km/h 0.7290755322 ft/s
0.9 km/h 0.8202099738 ft/s
1 km/h 0.9113444153 ft/s
1.5 km/h 1.367016623 ft/s
2 km/h 1.822688831 ft/s
2.5 km/h 2.278361038 ft/s
3 km/h 2.734033246 ft/s
3.5 km/h 3.189705453 ft/s
4 km/h 3.645377661 ft/s
4.5 km/h 4.101049869 ft/s
5 km/h 4.556722076 ft/s
5.5 km/h 5.012394284 ft/s
6 km/h 5.468066492 ft/s
6.5 km/h 5.923738699 ft/s
7 km/h 6.379410907 ft/s
7.5 km/h 6.835083115 ft/s
8 km/h 7.290755322 ft/s
8.5 km/h 7.74642753 ft/s
9 km/h 8.202099738 ft/s
9.5 km/h 8.657771945 ft/s
10 km/h 9.113444153 ft/s
11 km/h 10.02478857 ft/s
12 km/h 10.93613298 ft/s
13 km/h 11.8474774 ft/s
14 km/h 12.75882181 ft/s
15 km/h 13.67016623 ft/s
16 km/h 14.58151064 ft/s
17 km/h 15.49285506 ft/s
18 km/h 16.40419948 ft/s
19 km/h 17.31554389 ft/s
20 km/h 18.22688831 ft/s
25 km/h 22.78361038 ft/s
30 km/h 27.34033246 ft/s
35 km/h 31.89705453 ft/s
40 km/h 36.45377661 ft/s
45 km/h 41.01049869 ft/s
50 km/h 45.56722076 ft/s
55 km/h 50.12394284 ft/s
60 km/h 54.68066492 ft/s
65 km/h 59.23738699 ft/s
70 km/h 63.79410907 ft/s
75 km/h 68.35083115 ft/s
80 km/h 72.90755322 ft/s
85 km/h 77.4642753 ft/s
90 km/h 82.02099738 ft/s
95 km/h 86.57771945 ft/s
100 km/h 91.13444153 ft/s
120 km/h 109.3613298 ft/s
125 km/h 113.9180519 ft/s
130 km/h 118.474774 ft/s
140 km/h 127.5882181 ft/s
150 km/h 136.7016623 ft/s
160 km/h 145.8151064 ft/s
175 km/h 159.4852727 ft/s
180 km/h 164.0419948 ft/s
200 km/h 182.2688831 ft/s
225 km/h 205.0524934 ft/s
250 km/h 227.8361038 ft/s
275 km/h 250.6197142 ft/s
300 km/h 273.4033246 ft/s
350 km/h 318.9705453 ft/s
400 km/h 364.5377661 ft/s
450 km/h 410.1049869 ft/s
500 km/h 455.6722076 ft/s
600 km/h 546.8066492 ft/s
700 km/h 637.9410907 ft/s
750 km/h 683.5083115 ft/s
800 km/h 729.0755322 ft/s
900 km/h 820.2099738 ft/s
1000 km/h 911.3444153 ft/s
1200 km/h 1093.613298 ft/s
1250 km/h 1139.180519 ft/s
1500 km/h 1367.016623 ft/s
1750 km/h 1594.852727 ft/s
2000 km/h 1822.688831 ft/s
2500 km/h 2278.361038 ft/s
3000 km/h 2734.033246 ft/s
4000 km/h 3645.377661 ft/s
4500 km/h 4101.049869 ft/s
5000 km/h 4556.722076 ft/s
6000 km/h 5468.066492 ft/s
7000 km/h 6379.410907 ft/s
7500 km/h 6835.083115 ft/s
8000 km/h 7290.755322 ft/s
9000 km/h 8202.099738 ft/s
10000 km/h 9113.444153 ft/s
15000 km/h 13670.16623 ft/s
20000 km/h 18226.88831 ft/s
25000 km/h 22783.61038 ft/s
50000 km/h 45567.22076 ft/s
75000 km/h 68350.83115 ft/s
100000 km/h 91134.44153 ft/s

Values based on NIST SP 811 conversion factors

Why Convert Kilometers per Hour to Feet per Second?

Converting between kilometers per hour (km/h) and feet per second (ft/s) is one of the most common speed conversions. Whether for engineering, cooking, travel, or science, knowing how to quickly convert km/h to ft/s saves time and prevents errors.

Speed conversions from km/h to ft/s are critical for navigation, aviation, and sports analytics. Pilots and sailors must constantly convert between knots, km/h, and mph to ensure safe travel and comply with international air and maritime regulations. For motorists driving across borders, understanding local speed limits in a different unit is vital to avoid fines and accidents. In sports, analyzing the performance of sprinters, cyclists, or racing cars often involves comparing speeds recorded in different measurement systems. Accurate speed conversion ensures safety, legal compliance, and fair competitive analysis.

How to Convert Kilometers per Hour to Feet per Second

To convert kilometers per hour to feet per second, use the following formula:

ft/s = km/h × 0.9113444153

Example: 1 km/h = 0.9113444153 ft/s

For example, 5 km/h = 4.556722076 ft/s, 10 km/h = 9.113444153 ft/s, and 100 km/h = 91.13444153 ft/s. For larger values, 1000 km/h = 911.3444153 ft/s. Conversely, 1 ft/s = 1.09728 km/h. Our calculator above performs this conversion instantly with full precision — no rounding errors.

Common Mistakes to Avoid

  • Knots vs MPH: a Knot is faster than a Mile per Hour (1 Knot = 1.15 mph).
  • Mach numbers: speed of sound varies with temperature/altitude.
  • Pace confusion: mixing up speed (distance/time) with pace (time/distance).

Pro Tips

  • Highway math: 60 mph = 1 mile per minute. Easy for ETA calculation.
  • KPH to MPH: Multiply km/h by 0.6 to get mph (approx).
  • Light speed: Nothing travels faster than light (approx 300,000 km/s).

What is a Kilometer per Hour?

Kilometers per hour (km/h) is a unit of speed, expressing the number of kilometers traveled in one hour.

Km/h is the standard unit for speed limits and vehicle speedometers in most countries worldwide (except the US and UK).

What is a Foot per Second?

A unit of speed in the Imperial/US Customary systems.

Often used in ballistics and fluid dynamics.

Frequently Asked Questions

Speed More Conversions

km/h → mphmph → km/hm/s → km/hkm/h → m/skn → km/hkn → mph

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