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How to Change KWH to Amps

Electricity used in a home is typically measured in kilowatt hours (KWH). While they represent the total amount of energy used, you may want to know how much electrical current flowed through the home's electrical wires. Because a kilowatt hour is a unit of energy and an ampere (amp) is a unit of current, converting from one measurement to the other measurement is possible only with additional information. The conversion is straightforward, however, when you know the time and either the voltage or resistance involved.

Things You'll Need

Calculator

Instructions

- 1
  Multiply the number of kilowatt hours by 3.6 million to find the value in joules. For example, 10 kilowatt hours equal 36 million joules.
- 2
  Divide the number of joules by the specific time involved in seconds. This gives you the power in watts. If 36 million joules were used during 6,000 seconds, for instance, then 6000 watts were used.
- 3
  Find the current in amperes by solving the equation I=square root of (P/R). In that equation, "I" represents the current in amps, "P" is the power in watts and "R" is the resistance in ohms. For example, if P is 6,000 watts and R is 10 ohms, then I is the square root of 6,000 watts divided by 10 ohms, or 24.5 amps.
  
  Find the amps using voltage by solving the equation I=P/V. In that equation, "I" represents the current in amps, "P" is the power in watts and "V" is volts. If the voltage is 10 volts, then I is 6,000 watts divided by 10 volts, or 600 amps.

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