Watts to Amps Calculator
Calculate electrical power conversions for DC and AC circuits
Calculation Settings
Select calculation mode and enter values
Common Voltages
Click to use standard voltage values
Common Appliances
Click to calculate for typical devices
Calculation Result
Formulas Used
Wire Gauge Reference
Maximum safe current for copper wire
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About Watts to Amps Conversion
Understanding Electrical Power
Watts (W) measure electrical power, which is the rate of energy consumption. Amps (A) measure electrical current, which is the flow of electrons. Volts (V) measure electrical potential difference. These three values are related through Ohm's Law and power formulas.
DC vs AC Current
What is Power Factor?
Power factor (PF) is a measure of how effectively electrical power is being used. It ranges from 0 to 1, where 1 represents perfect efficiency. AC circuits with inductive or capacitive loads (like motors) have a power factor less than 1.
- Resistive loads (heaters, incandescent bulbs): PF ≈ 1.0
- Motors and compressors: PF ≈ 0.8-0.9
- Fluorescent lights: PF ≈ 0.5-0.95
- Computers and electronics: PF ≈ 0.6-0.9
Safety Considerations
- Always use wire gauge rated for the expected current
- Add 20-25% safety margin for continuous loads
- Circuit breakers should match wire capacity
- Consult a licensed electrician for installations
- Follow local electrical codes and regulations
Common Voltage Standards
⚠️ Important Safety Warning
Working with electricity can be dangerous. This calculator is for educational and planning purposes only. Always consult a licensed electrician for actual electrical work. Never exceed the rated capacity of wires, breakers, or outlets. Improper electrical work can cause fires, equipment damage, injury, or death.