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Speed • NIST Exact

Feet per Second → Kilometers per Hour

ft/s → km/h

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NIST Exact

Based on U.S. National Institute of Standards

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Feet per Second to Kilometers per Hour Formula

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

Kilometers per Hour = Feet per Second × NaN

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

ft/s → km/h Reference Table

ft/s km/h
0.001 ft/s 0.00109728 km/h
0.002 ft/s 0.00219456 km/h
0.003 ft/s 0.00329184 km/h
0.004 ft/s 0.00438912 km/h
0.005 ft/s 0.0054864 km/h
0.006 ft/s 0.00658368 km/h
0.007 ft/s 0.00768096 km/h
0.008 ft/s 0.00877824 km/h
0.009 ft/s 0.00987552 km/h
0.01 ft/s 0.0109728 km/h
0.02 ft/s 0.0219456 km/h
0.03 ft/s 0.0329184 km/h
0.04 ft/s 0.0438912 km/h
0.05 ft/s 0.054864 km/h
0.06 ft/s 0.0658368 km/h
0.07 ft/s 0.0768096 km/h
0.08 ft/s 0.0877824 km/h
0.09 ft/s 0.0987552 km/h
0.1 ft/s 0.109728 km/h
0.2 ft/s 0.219456 km/h
0.3 ft/s 0.329184 km/h
0.4 ft/s 0.438912 km/h
0.5 ft/s 0.54864 km/h
0.6 ft/s 0.658368 km/h
0.7 ft/s 0.768096 km/h
0.8 ft/s 0.877824 km/h
0.9 ft/s 0.987552 km/h
1 ft/s 1.09728 km/h
1.5 ft/s 1.64592 km/h
2 ft/s 2.19456 km/h
2.5 ft/s 2.7432 km/h
3 ft/s 3.29184 km/h
3.5 ft/s 3.84048 km/h
4 ft/s 4.38912 km/h
4.5 ft/s 4.93776 km/h
5 ft/s 5.4864 km/h
5.5 ft/s 6.03504 km/h
6 ft/s 6.58368 km/h
6.5 ft/s 7.13232 km/h
7 ft/s 7.68096 km/h
7.5 ft/s 8.2296 km/h
8 ft/s 8.77824 km/h
8.5 ft/s 9.32688 km/h
9 ft/s 9.87552 km/h
9.5 ft/s 10.42416 km/h
10 ft/s 10.9728 km/h
11 ft/s 12.07008 km/h
12 ft/s 13.16736 km/h
13 ft/s 14.26464 km/h
14 ft/s 15.36192 km/h
15 ft/s 16.4592 km/h
16 ft/s 17.55648 km/h
17 ft/s 18.65376 km/h
18 ft/s 19.75104 km/h
19 ft/s 20.84832 km/h
20 ft/s 21.9456 km/h
25 ft/s 27.432 km/h
30 ft/s 32.9184 km/h
35 ft/s 38.4048 km/h
40 ft/s 43.8912 km/h
45 ft/s 49.3776 km/h
50 ft/s 54.864 km/h
55 ft/s 60.3504 km/h
60 ft/s 65.8368 km/h
65 ft/s 71.3232 km/h
70 ft/s 76.8096 km/h
75 ft/s 82.296 km/h
80 ft/s 87.7824 km/h
85 ft/s 93.2688 km/h
90 ft/s 98.7552 km/h
95 ft/s 104.2416 km/h
100 ft/s 109.728 km/h
120 ft/s 131.6736 km/h
125 ft/s 137.16 km/h
130 ft/s 142.6464 km/h
140 ft/s 153.6192 km/h
150 ft/s 164.592 km/h
160 ft/s 175.5648 km/h
175 ft/s 192.024 km/h
180 ft/s 197.5104 km/h
200 ft/s 219.456 km/h
225 ft/s 246.888 km/h
250 ft/s 274.32 km/h
275 ft/s 301.752 km/h
300 ft/s 329.184 km/h
350 ft/s 384.048 km/h
400 ft/s 438.912 km/h
450 ft/s 493.776 km/h
500 ft/s 548.64 km/h
600 ft/s 658.368 km/h
700 ft/s 768.096 km/h
750 ft/s 822.96 km/h
800 ft/s 877.824 km/h
900 ft/s 987.552 km/h
1000 ft/s 1097.28 km/h
1200 ft/s 1316.736 km/h
1250 ft/s 1371.6 km/h
1500 ft/s 1645.92 km/h
1750 ft/s 1920.24 km/h
2000 ft/s 2194.56 km/h
2500 ft/s 2743.2 km/h
3000 ft/s 3291.84 km/h
4000 ft/s 4389.12 km/h
4500 ft/s 4937.76 km/h
5000 ft/s 5486.4 km/h
6000 ft/s 6583.68 km/h
7000 ft/s 7680.96 km/h
7500 ft/s 8229.6 km/h
8000 ft/s 8778.24 km/h
9000 ft/s 9875.52 km/h
10000 ft/s 10972.8 km/h
15000 ft/s 16459.2 km/h
20000 ft/s 21945.6 km/h
25000 ft/s 27432 km/h
50000 ft/s 54864 km/h
75000 ft/s 82296 km/h
100000 ft/s 109728 km/h

Values based on NIST SP 811 conversion factors

Why Convert Feet per Second to Kilometers per Hour?

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

Speed conversions from ft/s to km/h 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 Feet per Second to Kilometers per Hour

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

km/h = ft/s × 1.09728

Example: 1 ft/s = 1.09728 km/h

For example, 5 ft/s = 5.4864 km/h, 10 ft/s = 10.9728 km/h, and 100 ft/s = 109.728 km/h. For larger values, 1000 ft/s = 1097.28 km/h. Conversely, 1 km/h = 0.9113444153 ft/s. 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 Foot per Second?

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

Often used in ballistics and fluid dynamics.

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).

Frequently Asked Questions

Speed More Conversions

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

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