How many kilometers per hour in 4.2 knots?

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 4.2 knots into kilometers per hour we have to multiply 4.2 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

4.2 kt → V_(km/h)

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

V_(km/h) = 4.2 kt × 1.8519999999969 km/h

V_(km/h) = 7.7783999999871 km/h

The final result is:

4.2 kt → 7.7783999999871 km/h

We conclude that 4.2 knots is equivalent to 7.7783999999871 kilometers per hour:

4.2 knots = 7.7783999999871 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 0.12856114368015 × 4.2 knots.

Another way is saying that 4.2 knots is equal to 1 ÷ 0.12856114368015 kilometers per hour.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that four point two knots is approximately seven point seven seven eight kilometers per hour:

4.2 kt ≅ 7.778 km/h

An alternative is also that one kilometer per hour is approximately zero point one two nine times four point two 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

knots (kt)	kilometers per hour (km/h)
5.2 knots	9.63 kilometers per hour
6.2 knots	11.482 kilometers per hour
7.2 knots	13.334 kilometers per hour
8.2 knots	15.186 kilometers per hour
9.2 knots	17.038 kilometers per hour
10.2 knots	18.89 kilometers per hour
11.2 knots	20.742 kilometers per hour
12.2 knots	22.594 kilometers per hour
13.2 knots	24.446 kilometers per hour
14.2 knots	26.298 kilometers per hour

Conversion units

The units involved in this conversion are knots and kilometers per hour. This is how they are defined:

Knot

The knot is a unit of speed equal to one nautical mile (1.852 km) per hour, approximately 1.151 mph. The ISO Standard symbol for the knot is kn. The same symbol is preferred by the IEEE; kt is also common. The knot is a non-SI unit that is "accepted for use with the SI". Worldwide, the knot is used in meteorology, and in maritime and air navigation—for example, a vessel travelling at 1 knot along a meridian travels approximately one minute of geographic latitude in one hour. Etymologically, the term derives from counting the number of knots in the line that unspooled from the reel of a chip log in a specific time.

Source: Wikipedia Topic: knot

Kilometer per hour

The kilometre per hour (American English: kilometer per hour) is a unit of speed, expressing the number of kilometres travelled in one hour. The unit symbol is km/h. Worldwide, it is the most commonly used unit of speed on road signs and car speedometers. Although the metre was formally defined in 1799, the term "kilometres per hour" did not come into immediate use – the myriametre (10,000 metres) and myriametre per hour were preferred to kilometres and kilometres per hour.

Source: Wikipedia Topic: kilometer per hour