Convert 0.4 Horsepower to Watts

How much power is 0.4 horsepower? What is 2⁄5 of a horsepower in watts? 0.4 HP to W conversion.
Amount
From
To
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0.4 Mechanical Horsepower ≈
298.27995 Watts
result rounded
Decimal places
Result in Plain English
0.4 horsepower is equal to about 298 watts.
From a Percentage
40% of a horsepower ≈ 298 watts.
In Scientific Notation
0.4 horsepower
= 4 x 10-1 horsepower
≈ 2.9828 x 102 watts
Horsepower
Mechanical horsepower is commonly used to measure the maximum power of a car's engine in the United States. It is slightly different than Metric horsepower, which is used in Europe.
Watts
A watt is the standard unit of power. It is the power needed to do one joule of work per second. A typical incandescent light bulb uses 40-100 watts.
Horsepower to Watts Conversions
results may be rounded
HP W
0.400 298.28
0.401 299.03
0.402 299.77
0.403 300.52
0.404 301.26
0.405 302.01
0.406 302.75
0.407 303.50
0.408 304.25
0.409 304.99
0.410 305.74
0.411 306.48
0.412 307.23
0.413 307.97
0.414 308.72
0.415 309.47
0.416 310.21
0.417 310.96
0.418 311.70
0.419 312.45
0.420 313.19
0.421 313.94
0.422 314.69
0.423 315.43
0.424 316.18
0.425 316.92
0.426 317.67
0.427 318.41
0.428 319.16
0.429 319.91
0.430 320.65
0.431 321.40
0.432 322.14
0.433 322.89
HP W
0.434 323.63
0.435 324.38
0.436 325.13
0.437 325.87
0.438 326.62
0.439 327.36
0.440 328.11
0.441 328.85
0.442 329.60
0.443 330.35
0.444 331.09
0.445 331.84
0.446 332.58
0.447 333.33
0.448 334.07
0.449 334.82
0.450 335.56
0.451 336.31
0.452 337.06
0.453 337.80
0.454 338.55
0.455 339.29
0.456 340.04
0.457 340.78
0.458 341.53
0.459 342.28
0.460 343.02
0.461 343.77
0.462 344.51
0.463 345.26
0.464 346.00
0.465 346.75
0.466 347.50
0.467 348.24
HP W
0.468 348.99
0.469 349.73
0.470 350.48
0.471 351.22
0.472 351.97
0.473 352.72
0.474 353.46
0.475 354.21
0.476 354.95
0.477 355.70
0.478 356.44
0.479 357.19
0.480 357.94
0.481 358.68
0.482 359.43
0.483 360.17
0.484 360.92
0.485 361.66
0.486 362.41
0.487 363.16
0.488 363.90
0.489 364.65
0.490 365.39
0.491 366.14
0.492 366.88
0.493 367.63
0.494 368.38
0.495 369.12
0.496 369.87
0.497 370.61
0.498 371.36
0.499 372.10
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