Table of Contents
Horsepower (hp)
Horsepower is a unit of power commonly used in the automotive and industrial fields. It was originally developed to compare the power output of steam engines to the power of horses. One horsepower is equivalent to approximately 746 watts. It’s commonly used to express the power of engines, motors, and other mechanical devices.
Watt (W)
Watt is the standard unit of power in the International System of Units (SI). It measures the rate of energy transfer or the amount of work done per unit of time. One watt is defined as one joule of energy transferred per second. Watts are widely used to measure the power of electrical devices, light bulbs, appliances, and electronics.
How to convert hp to watts
To convert horsepower (hp) to watts (W), you can use the following conversion formula:
1 horsepower (hp) = 746 watts (W)
So, to convert horsepower to watts, simply multiply the value in horsepower by 746. Here’s the formula:
P(W) = 745.699872 ⋅ P(hp)
For Example – Convert 1.5 hp to watts
Ans. P(W) = 745.699872 x 1.5hp = 1,118.54 W
See Also
Watts to horsepower conversion table
| Watts (W) |
Mechanic horsepower (hp(I)) |
Electric horsepower (hp(E)) |
Metric horsepower (hp(M)) |
| 1 W | 0.001341 hp | 0.001340 hp | 0.001360 hp |
| 2 W | 0.002682 hp | 0.002681 hp | 0.002719 hp |
| 3 W | 0.004023 hp | 0.004021 hp | 0.004079 hp |
| 4 W | 0.005364 hp | 0.005362 hp | 0.005438 hp |
| 5 W | 0.006705 hp | 0.006702 hp | 0.006798 hp |
| 6 W | 0.008046 hp | 0.008043 hp | 0.008158 hp |
| 7 W | 0.009387 hp | 0.009383 hp | 0.009517 hp |
| 8 W | 0.010728 hp | 0.010724 hp | 0.010877 hp |
| 9 W | 0.012069 hp | 0.012064 hp | 0.012237 hp |
| 10 W | 0.013410 hp | 0.013405 hp | 0.013596 hp |
| 20 W | 0.026820 hp | 0.026810 hp | 0.027192 hp |
| 30 W | 0.040231 hp | 0.040214 hp | 0.040789 hp |
| 40 W | 0.053641 hp | 0.053619 hp | 0.054385 hp |
| 50 W | 0.067051 hp | 0.067024 hp | 0.067981 hp |
| 60 W | 0.080461 hp | 0.080429 hp | 0.081577 hp |
| 70 W | 0.093871 hp | 0.093834 hp | 0.095174 hp |
| 80 W | 0.107282 hp | 0.107239 hp | 0.108770 hp |
| 90 W | 0.120692 hp | 0.120643 hp | 0.122366 hp |
| 100 W | 0.134022 hp | 0.134048 hp | 0.135962 hp |
| 200 W | 0.268204 hp | 0.268097 hp | 0.271924 hp |
| 300 W | 0.402307 hp | 0.402145 hp | 0.407886 hp |
| 400 W | 0.536409 hp | 0.536193 hp | 0.543849 hp |
| 500 W | 0.670511 hp | 0.670241 hp | 0.679811 hp |
| 600 W | 0.804613 hp | 0.804290 hp | 0.815773 hp |
| 700 W | 0.938715 hp | 0.938338 hp | 0.951735 hp |
| 800 W | 1.072817 hp | 1.072386 hp | 1.087697 hp |
| 900 W | 1.206920 hp | 1.206434 hp | 1.223659 hp |
| 1000 W | 1.341022 hp | 1.340483 hp | 1.359622 hp |
| 2000 W | 2.682044 hp | 2.680965 hp | 2.719243 hp |
| 3000 W | 4.023066 hp | 4.021448 hp | 4.078865 hp |
| 4000 W | 5.364088 hp | 5.361930 hp | 5.438486 hp |
| 5000 W | 6.705110 hp | 6.702413 hp | 6.798108 hp |
FAQs on hp to W conversion
Is 1 hp equal to 1000 watts?
No, 1 hp is not equal to 1000 watts. One horsepower is equivalent to approximately 746 watts. So, 1 hp = 746 watts.
Why 1 HP is equal to 746 watts?
The conversion of 1 hp to 746 watts is based on the historical definition of horsepower. It was initially determined by James Watt, the Scottish engineer, during the 18th century when he compared the power output of steam engines to the power of draft horses. He found that on average, a horse could perform work at a rate of 550 foot-pounds per second. To make the unit more practical, the value was rounded to 746 watts.
How many watts is 1 HP in India?
In India and other parts of the world, 1 hp is also equal to 746 watts. The conversion remains the same regardless of the country or region.
How much is 1W to 1HP?
1 watt (W) is equal to 1/746 of a horsepower (hp). Conversely, 1 horsepower is equivalent to 746 watts. The relationship between watts and horsepower is fixed at this conversion factor.
What is 1 hp equal to?
1 hp is equal to approximately 746 watts. It represents the amount of power required to perform work at a rate of 550 foot-pounds per second, as historically determined by James Watt. Today, this unit is widely used to measure the power of engines, motors, and various mechanical and electrical devices.
