# Amps to Hp – Calculation, formula, chart. How many amps are in 1 HP?

Online tool to convert from Amp to HP , with the explanation of the formula used in the conversion.

In addition to several examples , a table of Amp to HP and the common values ​​of efficiency  and  power factor for electric motors.

Mas información:

## • IDC=Direct current.
• IAC1Ø=Current/Ampere 1 phase.
• IAC2Ø=Current/Ampere 2 phase.
• IAC3Ø=Current/Ampere 3 phase.
• H.P=Horsepower.
• VDC=Voltage direct current.
• VL-N=Voltage line to neutral.
• VL-L=Voltage line to line.
• Ef=Efficiency.
• P.F=Power factor.

## Step 1:

Multiply the AC voltage by the motor efficiency, the power factor, the current and the square root of 3. For example, if the motor is 220 V ac, it has an efficiency of 80%, the power factor is 0.9 and a correinte of 54.4A, you must Multiply 220 V ac by 0.8 (80%) by 0.9 by √3 (square root of 3) and by 54.4A to obtain 274.35 (220Vacx0.8×0.9x√3×54 .4 = 14.925).

Finally divide step 1 between step 2. For example, (220Vacx0.8 x 0.9x√3×54,4)/(746) = 20 Hp.