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Convert Kph to Mph

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Speed Converter

Easily convert between Kilometers per Hour (km/h), Miles per Hour (mph), Meters per Second (m/s), Feet per Second (ft/s), Knots (kt), and Mach. Whether you're measuring car speed, aircraft velocity, or physics experiment values, this tool gives you fast and accurate conversions.

Why Use It?

  • Ideal for travel, sports timing, aeronautics, and scientific calculations.
  • Converts between metric and imperial speed units.
  • Accurate to four decimal places.
  • Great for students, pilots, athletes, and engineers alike.

Popular Conversions

Common Speed Units and Their Uses

  • Car icon representing km/h for road speeds

    Kilometers per Hour (km/h)

    Common for road speeds worldwide.

  • Route icon representing mph for road speeds

    Miles per Hour (mph)

    Used in U.S./UK for road speeds.

  • Atom icon representing meters per second in science

    Meters per Second (m/s)

    SI unit, science and engineering.

  • Circle icon representing feet per second in physics

    Feet per Second (ft/s)

    Used in ballistics and physics.

  • Anchor icon representing knots in maritime and aviation

    Knots (kt)

    Maritime and aviation speed.

  • Plane icon representing Mach speed relative to sound

    Mach

    Relative to speed of sound.

Real-World Use Cases for Speed Conversion

  • Plane icon representing speed conversions in travel

    Travel

    Convert car or bike speeds while abroad.

  • Ship icon representing speed conversions in aviation and marine navigation

    Aviation & Marine

    Standardize speeds in navigation and transportation.

  • Running icon representing speed conversions in athletics

    Athletics

    Analyze race speeds and training performance.

  • Atom icon representing speed conversions in physics and engineering

    Physics & Engineering

    Solve speed-related problems in technical fields.

  • Rocket icon representing aerospace speed conversions near the sound barrier

    Aerospace

    Calculate and compare speeds near the sound barrier.

Frequently Asked Questions

What is Mach speed?

Mach is a ratio comparing an object's speed to the speed of sound in air. Mach 1 equals the speed of sound (approx. 343 m/s or 1,235 km/h) at sea level under standard atmospheric conditions.

How many mph is 100 km/h?

100 kilometers per hour is approximately 62.1371 miles per hour.

Why do airplanes use knots instead of km/h or mph?

Knots are based on nautical miles, which relate closely to lines of latitude and longitude. This makes them especially useful for navigation over the Earth's curved surface.

Are m/s and km/h interchangeable?

They measure the same quantity (speed), but 1 m/s = 3.6 km/h. So, they are not numerically equivalent and require conversion.

Kilometers per hour (km/h) to Miles per hour (mph) Conversion Table

Kilometers per hour (km/h)Miles per hour (mph)
10.621
21.243
31.864
42.486
53.107
63.728
74.35
84.971
95.592
106.214
116.835
127.457
138.078
148.699
159.321
169.942
1710.563
1811.185
1911.806
2012.427
2113.049
2213.67
2314.292
2414.913
2515.534
2616.156
2716.777
2817.398
2918.02
3018.641
3119.263
3219.884
3320.505
3421.127
3521.748
3622.369
3722.991
3823.612
3924.234
4024.855
4125.476
4226.098
4326.719
4427.34
4527.962
4628.583
4729.205
4829.826
4930.447
5031.069
5131.69
5232.311
5332.933
5433.554
5534.176
5634.797
5735.418
5836.04
5936.661
6037.282
6137.904
6238.525
6339.147
6439.768
6540.389
6641.011
6741.632
6842.253
6942.875
7043.496
7144.117
7244.739
7345.36
7445.982
7546.603
7647.224
7747.846
7848.467
7949.088
8049.71
8150.331
8250.953
8351.574
8452.195
8552.817
8653.438
8754.059
8854.681
8955.302
9055.924
9156.545
9257.166
9357.788
9458.409
9559.03
9659.652
9760.273
9860.895
9961.516
10062.137
10162.759
10263.38
10364.001
10464.623
10565.244
10665.866
10766.487
10867.108
10967.73
11068.351
11168.972
11269.594
11370.215
11470.836
11571.458
11672.079
11772.701
11873.322
11973.943
12074.565
12175.186
12275.807
12376.429
12477.05
12577.672
Kilometers per hour (km/h)Miles per hour (mph)
12678.293
12778.914
12879.536
12980.157
13080.778
13181.4
13282.021
13382.643
13483.264
13583.885
13684.507
13785.128
13885.749
13986.371
14086.992
14187.614
14288.235
14388.856
14489.478
14590.099
14690.72
14791.342
14891.963
14992.585
15093.206
15193.827
15294.449
15395.07
15495.691
15596.313
15696.934
15797.555
15898.177
15998.798
16099.42
161100.041
162100.662
163101.284
164101.905
165102.526
166103.148
167103.769
168104.391
169105.012
170105.633
171106.255
172106.876
173107.497
174108.119
175108.74
176109.362
177109.983
178110.604
179111.226
180111.847
181112.468
182113.09
183113.711
184114.333
185114.954
186115.575
187116.197
188116.818
189117.439
190118.061
191118.682
192119.304
193119.925
194120.546
195121.168
196121.789
197122.41
198123.032
199123.653
200124.274
201124.896
202125.517
203126.139
204126.76
205127.381
206128.003
207128.624
208129.245
209129.867
210130.488
211131.11
212131.731
213132.352
214132.974
215133.595
216134.216
217134.838
218135.459
219136.081
220136.702
221137.323
222137.945
223138.566
224139.187
225139.809
226140.43
227141.052
228141.673
229142.294
230142.916
231143.537
232144.158
233144.78
234145.401
235146.023
236146.644
237147.265
238147.887
239148.508
240149.129
241149.751
242150.372
243150.994
244151.615
245152.236
246152.858
247153.479
248154.1
249154.722
250155.343
Kilometers per hour (km/h)Miles per hour (mph)
251155.964
252156.586
253157.207
254157.829
255158.45
256159.071
257159.693
258160.314
259160.935
260161.557
261162.178
262162.8
263163.421
264164.042
265164.664
266165.285
267165.906
268166.528
269167.149
270167.771
271168.392
272169.013
273169.635
274170.256
275170.877
276171.499
277172.12
278172.742
279173.363
280173.984
281174.606
282175.227
283175.848
284176.47
285177.091
286177.713
287178.334
288178.955
289179.577
290180.198
291180.819
292181.441
293182.062
294182.683
295183.305
296183.926
297184.548
298185.169
299185.79
300186.412
301187.033
302187.654
303188.276
304188.897
305189.519
306190.14
307190.761
308191.383
309192.004
310192.625
311193.247
312193.868
313194.49
314195.111
315195.732
316196.354
317196.975
318197.596
319198.218
320198.839
321199.461
322200.082
323200.703
324201.325
325201.946
326202.567
327203.189
328203.81
329204.432
330205.053
331205.674
332206.296
333206.917
334207.538
335208.16
336208.781
337209.402
338210.024
339210.645
340211.267
341211.888
342212.509
343213.131
344213.752
345214.373
346214.995
347215.616
348216.238
349216.859
350217.48
351218.102
352218.723
353219.344
354219.966
355220.587
356221.209
357221.83
358222.451
359223.073
360223.694
361224.315
362224.937
363225.558
364226.18
365226.801
366227.422
367228.044
368228.665
369229.286
370229.908
371230.529
372231.151
373231.772
374232.393
375233.015
Kilometers per hour (km/h)Miles per hour (mph)
376233.636
377234.257
378234.879
379235.5
380236.121
381236.743
382237.364
383237.986
384238.607
385239.228
386239.85
387240.471
388241.092
389241.714
390242.335
391242.957
392243.578
393244.199
394244.821
395245.442
396246.063
397246.685
398247.306
399247.928
400248.549
401249.17
402249.792
403250.413
404251.034
405251.656
406252.277
407252.899
408253.52
409254.141
410254.763
411255.384
412256.005
413256.627
414257.248
415257.87
416258.491
417259.112
418259.734
419260.355
420260.976
421261.598
422262.219
423262.841
424263.462
425264.083
426264.705
427265.326
428265.947
429266.569
430267.19
431267.811
432268.433
433269.054
434269.676
435270.297
436270.918
437271.54
438272.161
439272.782
440273.404
441274.025
442274.647
443275.268
444275.889
445276.511
446277.132
447277.753
448278.375
449278.996
450279.618
451280.239
452280.86
453281.482
454282.103
455282.724
456283.346
457283.967
458284.589
459285.21
460285.831
461286.453
462287.074
463287.695
464288.317
465288.938
466289.56
467290.181
468290.802
469291.424
470292.045
471292.666
472293.288
473293.909
474294.53
475295.152
476295.773
477296.395
478297.016
479297.637
480298.259
481298.88
482299.501
483300.123
484300.744
485301.366
486301.987
487302.608
488303.23
489303.851
490304.472
491305.094
492305.715
493306.337
494306.958
495307.579
496308.201
497308.822
498309.443
499310.065
500310.686
Kph to Mph Conversion | 757 Box