1. Multiply the horsepower by 746 watts. For example, an engine at two horsepower with 230 volts would be calculated as two horsepower times 746 watts, which equals 1492. 2. Divide
http://www.ehow.com/how_6357498_calculateampshor...

Horses are strong, amps have no strength at all unless they have volts riding along with them. The power of an amp is the current in amps times the voltage in volts. So 1 amp at 746
http://wiki.answers.com/Q/Which_is_stronger_amps_o...

12 Amp would be 2 1/4 horsepower. Thanks for asking ChaCha.
http://www.chacha.com/question/howmanyhorsepower...

For typical 115 volt single phase AC motors, a 1 Hp motor would require 16 amps and a 11/2 Hp motor would require 20 amps. A 230 volt 3 Hp motor would typically require 17 amps.
http://answers.yahoo.com/question/index?qid=200712...
