13 Amps To HP Calculator

Single-phase HP from Amps Formula:

\[ HP = \frac{Amps \times Volts \times PF \times \eta}{746} \]

Amps (A):

Volts (V):

Power Factor (PF):

(0-1)

Efficiency (η):

(0-1)

Horsepower (HP):

Unit Converter ▲

Unit Converter ▼

From:	To:

1. What is the Amps to HP Calculator?

The Amps to HP Calculator converts electrical current (amperage) to mechanical power (horsepower) for single-phase AC motors. It accounts for voltage, power factor, and motor efficiency to provide accurate horsepower estimation.

2. How Does the Calculator Work?

The calculator uses the single-phase HP formula:

\[ HP = \frac{Amps \times Volts \times PF \times \eta}{746} \]

Where:

\( Amps \) — Electrical current in amperes (A)
\( Volts \) — Electrical voltage in volts (V)
\( PF \) — Power factor (0-1, typically 0.8-0.95)
\( \eta \) — Motor efficiency (0-1, typically 0.8-0.95)
\( 746 \) — Conversion factor (1 HP = 746 watts)

Explanation: The formula converts electrical power (watts) to mechanical power (horsepower) while accounting for power factor and efficiency losses.

3. Importance of HP Calculation

Details: Accurate horsepower calculation is essential for motor selection, electrical system design, load matching, and energy efficiency optimization in industrial and commercial applications.

4. Using the Calculator

Tips: Enter current in amps, voltage in volts, power factor (0.8-0.95 for most motors), and efficiency (0.8-0.95 for standard motors). All values must be positive numbers within their respective ranges.

5. Frequently Asked Questions (FAQ)

Q1: Why is power factor important in HP calculation?
A: Power factor represents the phase difference between voltage and current in AC systems. Lower power factor means more current is required for the same real power, affecting the actual horsepower output.

Q2: What are typical power factor values?
A: For single-phase motors, power factor typically ranges from 0.8 to 0.95. Higher quality motors have better power factors closer to 1.0.

Q3: How does motor efficiency affect HP calculation?
A: Efficiency accounts for energy losses due to heat, friction, and other factors. Higher efficiency motors convert more electrical energy to mechanical work.

Q4: Can this calculator be used for three-phase motors?
A: No, this calculator is for single-phase systems only. Three-phase calculations require a different formula that includes the square root of 3 (√3 ≈ 1.732).

Q5: What is the significance of 746 in the formula?
A: 746 watts equals 1 horsepower, serving as the conversion factor between electrical power (watts) and mechanical power (horsepower).