Feet per Second to Kilometers per Second

How to convert feet per second to kilometers per second

Formulakm/s = ft/s × 0.0003048

Multiply the value in feet per second by 0.0003048. To go the other way, multiply by 3,280.839895 (or divide by 0.0003048).

A foot per second is smaller than a kilometer per second: it takes 3,280.839895 feet per second to make one kilometer per second.

Worked examples

1 foot per second1 ft/s × 0.0003048 = 0.0003048 km/s
5 feet per second5 ft/s × 0.0003048 = 0.001524 km/s
10 feet per second10 ft/s × 0.0003048 = 0.003048 km/s
20 feet per second20 ft/s × 0.0003048 = 0.006096 km/s
100 feet per second100 ft/s × 0.0003048 = 0.03048 km/s

Feet per second to kilometers per second conversion table

Values are calculated by the conversion engine and rounded to 8 significant figures.

Feet per second to kilometers per second: 0.1–10 ft/s
Feet per second (ft/s)	Kilometers per second (km/s)
0.1 ft/s	0.00003048 km/s
0.25 ft/s	0.0000762 km/s
0.5 ft/s	0.0001524 km/s
1 ft/s	0.0003048 km/s
2 ft/s	0.0006096 km/s
3 ft/s	0.0009144 km/s
4 ft/s	0.0012192 km/s
5 ft/s	0.001524 km/s
6 ft/s	0.0018288 km/s
7 ft/s	0.0021336 km/s
8 ft/s	0.0024384 km/s
9 ft/s	0.0027432 km/s
10 ft/s	0.003048 km/s

Feet per second to kilometers per second: 12–1,000 ft/s
Feet per second (ft/s)	Kilometers per second (km/s)
12 ft/s	0.0036576 km/s
15 ft/s	0.004572 km/s
20 ft/s	0.006096 km/s
25 ft/s	0.00762 km/s
30 ft/s	0.009144 km/s
40 ft/s	0.012192 km/s
50 ft/s	0.01524 km/s
75 ft/s	0.02286 km/s
100 ft/s	0.03048 km/s
250 ft/s	0.0762 km/s
500 ft/s	0.1524 km/s
1,000 ft/s	0.3048 km/s

About the units

Foot per second (ft/s)

Exactly 0.3048 m/s. Used for projectile and fluid velocities in US engineering.

Kilometer per second (km/s)

The kilometer per second (km/s) is a unit of speed in the International System of Units (SI). One kilometer per second equals 1,000 meters per second (m/s).

Frequently asked questions

How many kilometers per second are in one foot per second?

There are 0.0003048 kilometers per second in one foot per second, and this value is exact by definition.

How do I convert feet per second to kilometers per second?

Multiply the number of feet per second by 0.0003048. For example, 10 ft/s × 0.0003048 = 0.003048 km/s.

How many feet per second are in one kilometer per second?

One kilometer per second equals 3,280.839895 feet per second. That is the reverse factor, 1 ÷ 0.0003048.

What is 10 feet per second in kilometers per second?

10 ft/s = 0.003048 km/s.

Is this ft/s to km/s converter accurate?

Yes. Both units are defined exactly in terms of SI units, so the conversion factor is exact; results are shown to 12 significant figures by default and you can change precision in the converter. Calculations run in your browser using the same tested engine that generated this page.

Feet per Second to Kilometers per Second Converter