Horsepower is a unit of power that originated in the 18th century, coined by engineer James Watt to compare the output of steam engines with the power of draft horses. A fascinating aspect is the value assigned to this measurement: 1 British horsepower equals approximately 745.7 watts. To put this into perspective, this means that just one horsepower can light up more than ten 60-watt light bulbs!
Interestingly, the unit became widely adopted not for its precision but as a marketing tool. Since people were familiar with the strength of horses in everyday tasks, comparing engine power to horses made industrial power even more relatable and understandable during the Industrial Revolution. Today, horsepower continues to be an essential metric in the automotive and engine industries worldwide, despite its equine origins.
A megawatt (MW) is a unit of power equal to one million watts and commonly used to quantify the electricity output of power plants and the energy capacity of large-scale renewable sources. To put it into perspective, a single megawatt can power approximately 200 to 1,000 homes for a year, depending on the regional energy consumption and efficiency standards.
Interestingly, major landmarks like the Eiffel Tower consume around 7 MW just for their illuminating beauty, while massive data centers, which power our digital world, can easily require dozens of megawatts to operate. As our dependency on electricity grows, understanding the scale of power like a megawatt highlights the essential conversation around sustainable energy solutions and efficient power generation.
Horsepower (British) | Megawatts |
---|---|
0
hp
|
0
MW
|
10
hp
|
0.007457
MW
|
20
hp
|
0.014914
MW
|
30
hp
|
0.022371
MW
|
40
hp
|
0.029828
MW
|
50
hp
|
0.037285
MW
|
60
hp
|
0.044742
MW
|
70
hp
|
0.052199
MW
|
80
hp
|
0.059656
MW
|
90
hp
|
0.067113
MW
|
100
hp
|
0.07457
MW
|
110
hp
|
0.082027
MW
|
120
hp
|
0.089484
MW
|
130
hp
|
0.096941
MW
|
140
hp
|
0.104398
MW
|
150
hp
|
0.111855
MW
|
160
hp
|
0.119312
MW
|
170
hp
|
0.126769
MW
|
180
hp
|
0.134226
MW
|
190
hp
|
0.141683
MW
|
200
hp
|
0.14914
MW
|
210
hp
|
0.156597
MW
|
220
hp
|
0.164054
MW
|
230
hp
|
0.171511
MW
|
240
hp
|
0.178968
MW
|
250
hp
|
0.186425
MW
|
260
hp
|
0.193882
MW
|
270
hp
|
0.201339
MW
|
280
hp
|
0.208796
MW
|
290
hp
|
0.216253
MW
|
300
hp
|
0.22371
MW
|
310
hp
|
0.231167
MW
|
320
hp
|
0.238624
MW
|
330
hp
|
0.246081
MW
|
340
hp
|
0.253538
MW
|
350
hp
|
0.260995
MW
|
360
hp
|
0.268452
MW
|
370
hp
|
0.275909
MW
|
380
hp
|
0.283366
MW
|
390
hp
|
0.290823
MW
|
400
hp
|
0.29828
MW
|
410
hp
|
0.305737
MW
|
420
hp
|
0.313194
MW
|
430
hp
|
0.320651
MW
|
440
hp
|
0.328108
MW
|
450
hp
|
0.335565
MW
|
460
hp
|
0.343022
MW
|
470
hp
|
0.350479
MW
|
480
hp
|
0.357936
MW
|
490
hp
|
0.365393
MW
|
500
hp
|
0.37285
MW
|
510
hp
|
0.380307
MW
|
520
hp
|
0.387764
MW
|
530
hp
|
0.395221
MW
|
540
hp
|
0.402678
MW
|
550
hp
|
0.410135
MW
|
560
hp
|
0.417592
MW
|
570
hp
|
0.425049
MW
|
580
hp
|
0.432506
MW
|
590
hp
|
0.439963
MW
|
600
hp
|
0.44742
MW
|
610
hp
|
0.454877
MW
|
620
hp
|
0.462334
MW
|
630
hp
|
0.469791
MW
|
640
hp
|
0.477248
MW
|
650
hp
|
0.484705
MW
|
660
hp
|
0.492162
MW
|
670
hp
|
0.499619
MW
|
680
hp
|
0.507076
MW
|
690
hp
|
0.514533
MW
|
700
hp
|
0.52199
MW
|
710
hp
|
0.529447
MW
|
720
hp
|
0.536904
MW
|
730
hp
|
0.544361
MW
|
740
hp
|
0.551818
MW
|
750
hp
|
0.559275
MW
|
760
hp
|
0.566732
MW
|
770
hp
|
0.574189
MW
|
780
hp
|
0.581646
MW
|
790
hp
|
0.589103
MW
|
800
hp
|
0.59656
MW
|
810
hp
|
0.604017
MW
|
820
hp
|
0.611474
MW
|
830
hp
|
0.618931
MW
|
840
hp
|
0.626388
MW
|
850
hp
|
0.633845
MW
|
860
hp
|
0.641302
MW
|
870
hp
|
0.648759
MW
|
880
hp
|
0.656216
MW
|
890
hp
|
0.663673
MW
|
900
hp
|
0.67113
MW
|
910
hp
|
0.678587
MW
|
920
hp
|
0.686044
MW
|
930
hp
|
0.693501
MW
|
940
hp
|
0.700958
MW
|
950
hp
|
0.708415
MW
|
960
hp
|
0.715872
MW
|
970
hp
|
0.723329
MW
|
980
hp
|
0.730786
MW
|
990
hp
|
0.738243
MW
|
1000
hp
|
0.7457
MW
|
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