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

With this calculator you can convert online from Amp to Hp automatically, easily, quickly and free.

For ease we explain how to convert from Amp to Hp in only 1 step, that the formula is used for the calculation and a table with the main conversions of Amp to Hp.

We also show the most common power factors in addition to efficiency values.

 Amp to Hp calculation formula, DC, AC, 3 phase, 2 phase, 1 phase:

Formula for convert Amp to HP

  • 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.

 

How to convert Amp to Hp AC 3 phases in only 1 step:

amp to hp in only one step

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.

 

Frequently asked questions and answers.

How many amps are in 1 HP?

A three-phase 1hp motor, with an efficiency of 85%, a voltage of 220Vac and a power factor of 0.85, has an amperage of 2.71 Amp.

How many amps does a 1.5 hp motor?

A three-phase 1,5hp motor, with an efficiency of 85%, a voltage of 220Vac and a power factor of 0.85, has an amperage of 4,06 Amp.

 

Amp to Hp conversion chart-table:

Amp AC Phases Efic. Volt. Pf Hp
1A 3P 78% 208V 0,84 0,31Hp
2A 3P 78% 208V 0,84 0,63Hp
3A 3P 78% 208V 0,84 0,94Hp
4A 3P 78% 208V 0,84 1,26Hp
5A 3P 84% 208V 0,84 1,7Hp
6A 3P 84% 208V 0,86 2,09Hp
7A 3P 84% 208V 0,86 2,44Hp
8A 3P 84% 208V 0,86 2,79Hp
9A 3P 84% 208V 0,86 3,13Hp
10A 3P 85% 208V 0,86 3,53Hp
20A 3P 85% 220V 0,86 7,46Hp
30A 3P 88% 220V 0,89 12Hp
40A 3P 88% 220V 0,89 16Hp
50A 3P 88% 220V 0,89 20Hp
60A 3P 90% 220V 0,89 24,5Hp
70A 3P 90% 220V 0,89 28,64Hp
80A 3P 90% 220V 0,89 32,73Hp
90A 3P 90% 220V 0,89 36,82Hp
100A 3P 90% 220V 0,89 40,91Hp
200A 3P 91% 440V 0,91 169,19Hp
300A 3P 92% 440V 0,91 256,5Hp
400A 3P 92% 440V 0,91 342,1Hp
500A 3P 92% 440V 0,91 427,63Hp
600A 3P 92% 440V 0,91 513,16Hp
700A 3P 92% 440V 0,91 598,68Hp
800A 3P 92% 440V 0,91 684,216Hp
900A 3P 92% 440V 0,91 769,74Hp
1000A 3P 92% 480V 0,91 933,02Hp
1100A 3P 92% 480V 0,91 1026,32Hp
1200A 3P 92% 480V 0,91 1119,62Hp
1300A 3P 92% 480V 0,91 1212,9Hp
1400A 3P 92% 480V 0,91 1306,23Hp
1500A 3P 92% 480V 0,91 1399,53Hp
1600A 3P 92% 480V 0,91 1492,8Hp
1700A 3P 92% 480V 0,91 1586,13Hp
1800A 3P 92% 480V 0,91 1679,4Hp
1900A 3P 92% 480V 0,91 1772,7Hp
2000A 3P 92% 480V 0,91 1866Hp
2100A 3P 92% 480V 0,91 1959,3Hp
2200A 3P 92% 480V 0,91 2052,6Hp
2300A 3P 92% 480V 0,91 2145,95Hp

Rate this calculator Amp to Hp:  [kkstarratings]