Kilometers per hour to knots

knots = kilometers per hour × 0.5399568

How to convert kilometers per hour to knots

One kilometer per hour is 0.5399568 knots, so multiply the number of kilometers per hour by 0.5399568. For example, 20 kilometers per hour is 20 × 0.5399568 = 10.799136 knots. To go back, divide by the same number, or multiply by 1.852.

Quick estimate

Multiplying by about 0.5 gets within 7.4% of the exact answer, which is enough to check that a result makes sense.

Where it comes up

Speed conversions come up when driving abroad, in running and cycling paces, weather and wind reports, and sailing and flying.

kilometers per hour	knots
1 kph	0.5399568 kn
2 kph	1.079914 kn
3 kph	1.61987 kn
4 kph	2.159827 kn
5 kph	2.699784 kn
6 kph	3.239741 kn
7 kph	3.779698 kn
8 kph	4.319654 kn
9 kph	4.859611 kn
10 kph	5.399568 kn
11 kph	5.939525 kn
12 kph	6.479482 kn
13 kph	7.019438 kn
14 kph	7.559395 kn
15 kph	8.099352 kn
16 kph	8.639309 kn
17 kph	9.179266 kn
18 kph	9.719222 kn
19 kph	10.259179 kn
20 kph	10.799136 kn
25 kph	13.49892 kn
30 kph	16.198704 kn
40 kph	21.598272 kn
50 kph	26.99784 kn
60 kph	32.397408 kn
70 kph	37.796976 kn
75 kph	40.49676 kn
80 kph	43.196544 kn
90 kph	48.596112 kn
100 kph	53.99568 kn
120 kph	64.794816 kn
150 kph	80.993521 kn
200 kph	107.991361 kn
250 kph	134.989201 kn
300 kph	161.987041 kn
400 kph	215.982721 kn
500 kph	269.978402 kn
750 kph	404.967603 kn
1,000 kph	539.956803 kn
1,500 kph	809.935205 kn
2,000 kph	1,079.91 kn
5,000 kph	2,699.78 kn
10,000 kph	5,399.57 kn

Questions

How many knots are in a kilometer per hour?

0.5399568 knots.

How do I convert kilometers per hour to knots in a spreadsheet?

Put the value in A1 and type =A1*0.5399568, then fill the formula down the column.

Are the values in the table exact?

They are calculated from the exact definitions of the units and rounded only for display. Open any row for the full working.