Convert 21 Knots to Mach

How fast is 21 knots? What is 21 knots in Mach? 21 knots to mach conversion.

Amount

From

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21 Knots ≈

Mach 0.032608914

result rounded

Decimal places

Result in Plain English

21 knots is equal to about Mach 0.0326.

To a Percentage

21 knots ≈ 3.26% of a Mach.

In Scientific Notation

21 knots

= 2.1 x 10¹ knots

≈ 3.26089 x 10^-2 Mach

Knots

A knot is a unit of speed, equal to one nautical mile per hour. Something traveling at one knot is going about 1.151 land miles per hour.

Common abbreviations: kn, kt

Mach

Mach is the ratio of an object's speed to the speed of sound. For example, something traveling at Mach 5 is traveling at 5 times the speed of sound. The speed of sound varies depending on many factors. In dry air, at 0 degrees Celsius, the speed of sound is about 331.3 meters per second.

Knots to Mach Conversions

results may be rounded

knots	mach
21.00	0.032609
21.01	0.032624
21.02	0.032640
21.03	0.032655
21.04	0.032671
21.05	0.032687
21.06	0.032702
21.07	0.032718
21.08	0.032733
21.09	0.032749
21.10	0.032764
21.11	0.032780
21.12	0.032795
21.13	0.032811
21.14	0.032826
21.15	0.032842
21.16	0.032857
21.17	0.032873
21.18	0.032888
21.19	0.032904
21.20	0.032919
21.21	0.032935
21.22	0.032951
21.23	0.032966
21.24	0.032982
21.25	0.032997
21.26	0.033013
21.27	0.033028
21.28	0.033044
21.29	0.033059
21.30	0.033075
21.31	0.033090
21.32	0.033106
21.33	0.033121

knots	mach
21.34	0.033137
21.35	0.033152
21.36	0.033168
21.37	0.033183
21.38	0.033199
21.39	0.033215
21.40	0.033230
21.41	0.033246
21.42	0.033261
21.43	0.033277
21.44	0.033292
21.45	0.033308
21.46	0.033323
21.47	0.033339
21.48	0.033354
21.49	0.033370
21.50	0.033385
21.51	0.033401
21.52	0.033416
21.53	0.033432
21.54	0.033447
21.55	0.033463
21.56	0.033478
21.57	0.033494
21.58	0.033510
21.59	0.033525
21.60	0.033541
21.61	0.033556
21.62	0.033572
21.63	0.033587
21.64	0.033603
21.65	0.033618
21.66	0.033634
21.67	0.033649

knots	mach
21.68	0.033665
21.69	0.033680
21.70	0.033696
21.71	0.033711
21.72	0.033727
21.73	0.033742
21.74	0.033758
21.75	0.033774
21.76	0.033789
21.77	0.033805
21.78	0.033820
21.79	0.033836
21.80	0.033851
21.81	0.033867
21.82	0.033882
21.83	0.033898
21.84	0.033913
21.85	0.033929
21.86	0.033944
21.87	0.033960
21.88	0.033975
21.89	0.033991
21.90	0.034006
21.91	0.034022
21.92	0.034037
21.93	0.034053
21.94	0.034069
21.95	0.034084
21.96	0.034100
21.97	0.034115
21.98	0.034131
21.99	0.034146

Convert 21 Knots to Mach

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