## 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 40 kilometers per hour into knots we have to multiply 40 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

40 km/h → V(kt)

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

V(kt) = 40 km/h × 0.53995680345662 kt

V(kt) = 21.598272138265 kt

The final result is:

40 km/h → 21.598272138265 kt

We conclude that 40 kilometers per hour is equivalent to 21.598272138265 knots:

40 kilometers per hour = 21.598272138265 knots

## Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 knot is equal to 0.046299999999923 × 40 kilometers per hour.

Another way is saying that 40 kilometers per hour is equal to 1 ÷ 0.046299999999923 knots.

## Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that forty kilometers per hour is approximately twenty-one point five nine eight knots:

40 km/h ≅ 21.598 kt

An alternative is also that one knot is approximately zero point zero four six times forty 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)
41 kilometers per hour 22.138 knots
42 kilometers per hour 22.678 knots
43 kilometers per hour 23.218 knots
44 kilometers per hour 23.758 knots
45 kilometers per hour 24.298 knots
46 kilometers per hour 24.838 knots
47 kilometers per hour 25.378 knots
48 kilometers per hour 25.918 knots
49 kilometers per hour 26.458 knots
50 kilometers per hour 26.998 knots