Enter the total horsepower (hp), the voltage (volts), and the power factor into the calculator to determine the Current From HP.

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## Current From HP Formula

The following formula is used to calculate the Current From HP.

**I = HP * 746 / (V*PF*n)**

- Where I is the Current From HP (amps)
- HP is the total horsepower (hp)
- V is the voltage (volts)
- PF is the power factor
- n is the efficiency

To calculate current from horsepower, multiply the HP by 746, then divide by the product of the voltage, power factor, and efficiency.

## How to Calculate Current From HP?

The following example problems outline how to calculate Current From HP.

**Example Problem #1**

- First, determine the total horsepower (hp). In this example, the total horsepower (hp) is determined to be 10 .
- Next, determine the voltage (volts). For this problem, the voltage (volts) is measured to be 50 .
- Next, determine the power factor. In this case, the power factor is found to be 3.
- Next, determine the efficiency. For this problem this is .50.
- Finally, calculate the Current From HP using the formula above:

I = HP * 746 / (V*PF*n)

Inserting the values from above and solving yields:

I = 10* 746 / (50*3*.50) = 99.46 (amps)

**Example Problem #2**

Using the same method as above, determine the variables required by the formula. For this example problem, these are:

total horsepower (hp) = 50

voltage (volts) = 5

power factor = 10

efficiency = .76

Enter these given values into the calculator or above yields:

I = 50 * 746 / (5*10*.75) = 994.66 ** **(amps)