Conversion formula

The conversion factor from feet per second to kilometers per hour is 1.0972799999991, which means that 1 foot per second is equal to 1.0972799999991 kilometers per hour:

1 ft/s = 1.0972799999991 km/h

To convert 8490 feet per second into kilometers per hour we have to multiply 8490 by the conversion factor in order to get the velocity amount from feet per second to kilometers per hour. We can also form a simple proportion to calculate the result:

1 ft/s → 1.0972799999991 km/h

8490 ft/s → V_(km/h)

Solve the above proportion to obtain the velocity V in kilometers per hour:

V_(km/h) = 8490 ft/s × 1.0972799999991 km/h

V_(km/h) = 9315.9071999925 km/h

The final result is:

8490 ft/s → 9315.9071999925 km/h

We conclude that 8490 feet per second is equivalent to 9315.9071999925 kilometers per hour:

8490 feet per second = 9315.9071999925 kilometers per hour

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 kilometer per hour is equal to 0.00010734327624054 × 8490 feet per second.

Another way is saying that 8490 feet per second is equal to 1 ÷ 0.00010734327624054 kilometers per hour.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that eight thousand four hundred ninety feet per second is approximately nine thousand three hundred fifteen point nine zero seven kilometers per hour:

8490 ft/s ≅ 9315.907 km/h

An alternative is also that one kilometer per hour is approximately zero times eight thousand four hundred ninety feet per second.

Conversion table

feet per second to kilometers per hour chart

For quick reference purposes, below is the conversion table you can use to convert from feet per second to kilometers per hour