## Conversion formula

The conversion factor from kilometers per hour to knots is 0.53995680345662, which means that 1 kilometer per hour is equal to 0.53995680345662 knots:

1 km/h = 0.53995680345662 kt

To convert 3.9 kilometers per hour into knots we have to multiply 3.9 by the conversion factor in order to get the velocity amount from kilometers per hour to knots. We can also form a simple proportion to calculate the result:

1 km/h → 0.53995680345662 kt

3.9 km/h → V(kt)

Solve the above proportion to obtain the velocity V in knots:

V(kt) = 3.9 km/h × 0.53995680345662 kt

V(kt) = 2.1058315334808 kt

The final result is:

3.9 km/h → 2.1058315334808 kt

We conclude that 3.9 kilometers per hour is equivalent to 2.1058315334808 knots:

3.9 kilometers per hour = 2.1058315334808 knots

## Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 knot is equal to 0.474871794871 × 3.9 kilometers per hour.

Another way is saying that 3.9 kilometers per hour is equal to 1 ÷ 0.474871794871 knots.

## Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that three point nine kilometers per hour is approximately two point one zero six knots:

3.9 km/h ≅ 2.106 kt

An alternative is also that one knot is approximately zero point four seven five times three point nine kilometers per hour.

## Conversion table

### kilometers per hour to knots chart

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

kilometers per hour (km/h) knots (kt)
4.9 kilometers per hour 2.646 knots
5.9 kilometers per hour 3.186 knots
6.9 kilometers per hour 3.726 knots
7.9 kilometers per hour 4.266 knots
8.9 kilometers per hour 4.806 knots
9.9 kilometers per hour 5.346 knots
10.9 kilometers per hour 5.886 knots
11.9 kilometers per hour 6.425 knots
12.9 kilometers per hour 6.965 knots
13.9 kilometers per hour 7.505 knots