## 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 21 kilometers per hour into knots we have to multiply 21 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

21 km/h → V(kt)

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

V(kt) = 21 km/h × 0.53995680345662 kt

V(kt) = 11.339092872589 kt

The final result is:

21 km/h → 11.339092872589 kt

We conclude that 21 kilometers per hour is equivalent to 11.339092872589 knots:

21 kilometers per hour = 11.339092872589 knots

## Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 knot is equal to 0.088190476190329 × 21 kilometers per hour.

Another way is saying that 21 kilometers per hour is equal to 1 ÷ 0.088190476190329 knots.

## Approximate result

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

21 km/h ≅ 11.339 kt

An alternative is also that one knot is approximately zero point zero eight eight times twenty-one 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)
22 kilometers per hour 11.879 knots
23 kilometers per hour 12.419 knots
24 kilometers per hour 12.959 knots
25 kilometers per hour 13.499 knots
26 kilometers per hour 14.039 knots
27 kilometers per hour 14.579 knots
28 kilometers per hour 15.119 knots
29 kilometers per hour 15.659 knots
30 kilometers per hour 16.199 knots
31 kilometers per hour 16.739 knots