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Use this Amps to Watts converter to instantly get the conversion by entering the values of Amps and Volts.
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This Amps to Watts calculator helps determine the power (in watts) of an electrical device based on its current (amps) and voltage.
Amps and watts measure different aspects of electricity and are both important for calculating power.
Amps (A):
Amperes indicate the flow of electric current in a circuit. A higher amperage means more current is flowing.
Watts (W):
Watts measure the rate at which electrical energy is consumed or generated, representing the total power of a device. Higher wattage implies more energy usage or output.
The conversion depends on whether the system is DC or AC, and if AC, whether it is single-phase or three-phase.
For DC circuits, power is calculated as:
Watts (W) = Amps (A) × Volts (V)
For single-phase AC, include the power factor (PF) in the calculation:
Watts (W) = PF × Amps (A) × Volts (V)
Using line-to-line voltage:
Power (W) = √3 × VLL (V) × I (A)
Using line-to-neutral voltage:
Power (W) = 3 × VLN (V) × I (A)
Example: A 120V bulb drawing 0.5A has a power of:
Watts = 120 × 0.5 = 60 W
A volts-amps-watts calculator can simplify these conversions for any electrical system.
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| Current (A) | Voltage (V) | Power (W) |
|---|---|---|
| 1 | 120 | 120 |
| 2 | 120 | 240 |
| 3 | 120 | 360 |
| 4 | 120 | 480 |
| 5 | 120 | 600 |
| 6 | 120 | 720 |
| 7 | 120 | 840 |
| 8 | 120 | 960 |
| 9 | 120 | 1080 |
| 10 | 120 | 1200 |
| Appliance | Amps (A) | Watts (W) |
|---|---|---|
| Laptop | <0.5 | 100 |
| Mobile Charger | <0.5 | 75 |
| Mini Fridge | 0.5 | 100 |
| Standard Fridge | 1.5 | 150 |
| Kettle | Up to 13 | 3000 |
| Hair Dryer | 10 | 2200 |
| Iron | 13 | 3000 |
| Microwave | 6.5 | 1500 |
| Washing Machine | 10 | 2200 |
| Toaster (2 Slice) | 4 | 900 |
The number of watts per amp depends on system voltage. For a 120V system, 1 amp equals 120 watts.
Power (watts) is calculated by multiplying voltage by current:
Watts = Volts × Amps
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