Knots to KPH | Convert Knots to KPH

How to Convert Airspeed Between Knots and Kilometers per Hour

When working with aircraft speeds, there is often a need to switch between knots and kilometers per hour (KPH). While aviation frequently uses knots operationally, KPH is the standard metric airspeed measure. This guide provides the basics for converting between these units.

Understanding the Units

A knot equals one nautical mile traveled per hour. As nautical miles and standard miles differ in length, the conversion to metric units like KPH is not direct.

Some key reference speeds:

Unit	Conversion Factor	Reference Speeds
Knots	1.852 km per nautical mile	Boeing 747 cruises near 560 knots
KPH	0.54 nautical miles per km

So knots and KPH rates cover distance at different scales.

Performing the Conversion

To transition between knots and KPH, you multiply by the conversion factor:

KPH = Knots x 1.852 Knots = KPH / 1.852

Some example converted values:

| 500 knots | = | 926 KPH | | 1200 KPH | = | 648 knots |

As the math shows, speeds increase or decrease accordingly between the metrics.

Key Takeaways

To summarize converting airspeed units:

• Knots are based on nautical miles traveled per hour
• KPH uses standard metric kilometers per hour
• Use the conversion: KPH = Knots x 1.852
• Higher speeds in knots convert to lower KPH
• For mental math, double knots to estimate KPH

So by applying the proper conversion factor, knots can easily be converted to KPH to support analyses.

Type a value in the Knots field to convert the value to KPH:

Knots

KPH:

Knots to KPH Formula

KPH=knots*1.852

Example

140 knots to kph
259.28

85 knots to kph
157.42

34 knots to kph
62.968

convert 20 knots to kph
37.04

52 knots to kph
96.304

32 knots to kph
59.264

11 knots to kph
20.372

45 knots to kph
83.34

Knots to KPH Table Chart

Knot to Kilometers Per Hour Conversion Chart

knot	km/h	knot	km/h
1	1.852	51	94.452
2	3.704	52	96.304
3	5.556	53	98.156
4	7.408	54	100.008
5	9.26	55	101.86
6	11.112	56	103.712
7	12.964	57	105.564
8	14.816	58	107.416
9	16.668	59	109.268
10	18.52	60	111.12
11	20.372	61	112.972
12	22.224	62	114.824
13	24.076	63	116.676
14	25.928	64	118.528
15	27.78	65	120.38
16	29.632	66	122.232
17	31.484	67	124.084
18	33.336	68	125.936
19	35.188	69	127.788
20	37.04	70	129.64
21	38.892	71	131.492
22	40.744	72	133.344
23	42.596	73	135.196
24	44.448	74	137.048
25	46.3	75	138.9
26	48.152	76	140.752
27	50.004	77	142.604
28	51.856	78	144.456
29	53.708	79	146.308
30	55.56	80	148.16
31	57.412	81	150.012
32	59.264	82	151.864
33	61.116	83	153.716
34	62.968	84	155.568
35	64.82	85	157.42
36	66.672	86	159.272
37	68.524	87	161.124
38	70.376	88	162.976
39	72.228	89	164.828
40	74.08	90	166.68
41	75.932	91	168.532
42	77.784	92	170.384
43	79.636	93	172.236
44	81.488	94	174.088
45	83.34	95	175.94
46	85.192	96	177.792
47	87.044	97	179.644
48	88.896	98	181.496
49	90.748	99	183.348
50	92.6	100	185.2

Related Converters

1. MPH to KPH
2. MPH to Knots
3. MPH to Mach
4. KPH to MPH
5. KPH to Knots
6. KPH to Mach
7. Knots to MPH
8. Knots to KPH
9. Knots to Mach
10. Mach to MPH
11. Mach to KPH
12. Mach to Knots