Conversion formula

The conversion factor from knots to kilometers per hour is 1.8519999999969, which means that 1 knot is equal to 1.8519999999969 kilometers per hour:

1 kt = 1.8519999999969 km/h

To convert 421 knots into kilometers per hour we have to multiply 421 by the conversion factor in order to get the velocity amount from knots to kilometers per hour. We can also form a simple proportion to calculate the result:

1 kt → 1.8519999999969 km/h

421 kt → V_(km/h)

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

V_(km/h) = 421 kt × 1.8519999999969 km/h

V_(km/h) = 779.6919999987 km/h

The final result is:

421 kt → 779.6919999987 km/h

We conclude that 421 knots is equivalent to 779.6919999987 kilometers per hour:

421 knots = 779.6919999987 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 0.0012825577279255 × 421 knots.

Another way is saying that 421 knots is equal to 1 ÷ 0.0012825577279255 kilometers per hour.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that four hundred twenty-one knots is approximately seven hundred seventy-nine point six nine two kilometers per hour:

421 kt ≅ 779.692 km/h

An alternative is also that one kilometer per hour is approximately zero point zero zero one times four hundred twenty-one knots.

Conversion table

knots to kilometers per hour chart

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