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 1821 feet per second into kilometers per hour we have to multiply 1821 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

1821 ft/s → V_(km/h)

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

V_(km/h) = 1821 ft/s × 1.0972799999991 km/h

V_(km/h) = 1998.1468799984 km/h

The final result is:

1821 ft/s → 1998.1468799984 km/h

We conclude that 1821 feet per second is equivalent to 1998.1468799984 kilometers per hour:

1821 feet per second = 1998.1468799984 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 0.00050046370965522 × 1821 feet per second.

Another way is saying that 1821 feet per second is equal to 1 ÷ 0.00050046370965522 kilometers per hour.

Approximate result

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

1821 ft/s ≅ 1998.147 km/h

An alternative is also that one kilometer per hour is approximately zero point zero zero one times one thousand eight hundred twenty-one 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