Convert Watt to Horsepower (Imperial)
Unit definitions
Watt
The watt is the SI unit of power. It is defined as one joule per second ($1\ \text{W} = 1\ \text{J/s}$).
Horsepower (Imperial)
The imperial horsepower is defined as $550$ foot-pounds per second (i.e., the ability to raise $550$ pounds by a foot within a second). One imperial horsepower is approximately $745.7$ watts.
How to convert Watt to Horsepower (Imperial)
$$\text{Power}_{\text{hp}} = \text{Power}_{\text{W}} \cdot 0.001341022089595028329958639424674090$$
Examples
Example 1
Convert $45.0\ \text{W}$ to $\text{hp}$.
$$\text{Power}_{\text{hp}} = 45.0 \cdot 0.001341022089595028329958639424674090$$
$$\text{Power}_{\text{hp}} = 0.060346$$
$$\therefore \ 45.0\ \text{W} = 0.060346 \ \text{hp}$$
Example 2
Convert $60.0\ \text{W}$ to $\text{hp}$.
$$\text{Power}_{\text{hp}} = 60.0 \cdot 0.001341022089595028329958639424674090$$
$$\text{Power}_{\text{hp}} = 0.080461$$
$$\therefore \ 60.0\ \text{W} = 0.080461 \ \text{hp}$$
Example 3
Convert $115.0\ \text{W}$ to $\text{hp}$.
$$\text{Power}_{\text{hp}} = 115.0 \cdot 0.001341022089595028329958639424674090$$
$$\text{Power}_{\text{hp}} = 0.154218$$
$$\therefore \ 115.0\ \text{W} = 0.154218 \ \text{hp}$$
Example 4
Convert $135.0\ \text{W}$ to $\text{hp}$.
$$\text{Power}_{\text{hp}} = 135.0 \cdot 0.001341022089595028329958639424674090$$
$$\text{Power}_{\text{hp}} = 0.181038$$
$$\therefore \ 135.0\ \text{W} = 0.181038 \ \text{hp}$$
Example 5
Convert $200.0\ \text{W}$ to $\text{hp}$.
$$\text{Power}_{\text{hp}} = 200.0 \cdot 0.001341022089595028329958639424674090$$
$$\text{Power}_{\text{hp}} = 0.268204$$
$$\therefore \ 200.0\ \text{W} = 0.268204 \ \text{hp}$$