Amps to Watts Calculator
Use this amps to watts converter to get conversion by entering the values of amps and volts.
Amps to Watts Calculator
This Amps to Watts calculator calculates the wattage (power) of an electric device based on its amperage (current) and voltage.
What are Amps and Watts?
Amperes and watts are the units of measurement that represent various aspects of electric properties.
Amps (amperes):
Amps is the unit that measures the current flow of charges through the circuit. As the amperage increases, a large volume of electrical current can pass through the circuit.
Watts (wattage):
Watts indicates the speed at which energy is used or generated, commonly called power. The higher the wattage, the more power and output the appliance produces.
How to Calculate Amps to Watts?
To calculate the amp to watt look at the formulas below:
DC Amps to Watts
To calculate amps from the DC (Direct current), divide the watts by the voltage.
Power = Current ×Electric potential
Watts (W) = Amps (A) ×Volts (V)
AC Single Phase Amps to Watts
To find the AC (Alternating current) single-phase amp to watt follow the formula below:
Power = Power Factor × Current× Electric Potential
Watts = PF × Amps (A) × Volts (V)
AC Three Phase Amps to Watts
Calculation with line-to-line Voltage:
Power (P) = √3 × VLL (V) × I (A)
Where:
- P = Power in watts
- VLL = Line-to-line voltage
- I = Current in amperes
This formula is used when you know the line-to-line voltage and the current flowing through the system.
Calculation with line to Neutral Voltage:
Power (P) = 3 ×VLN (V) ×I (A)
Where:
- P = Power in watts
- VLN = Line-to-neutral voltage
- I = Current in amperes
This formula is used when you know the line-to-neutral voltage and the current flowing through the system.
If you have a 120-volt light bulb that draws 0.5 amps of current, you can calculate its wattage as:
Wattage = Volts x Amps
Wattage = 120 volts x 0.5 amps
Wattage = 60 watts
You can also calculate it by using the volts, amps watts calculator to determine the wattage to ensure your electrical system is operating safely and efficiently.
Applications of Amps to Watts Calculator:
Home Electronics:
Determine the power rating of appliances to ensure they can operate safely on your home's electrical system
Solar Energy:
To meet the energy needs of your home or business calculate the power output needed from solar panels
HVAC:
Determine the energy consumption of heating and cooling systems to optimize energy efficiency
Electrical Engineering:
Calculate the power consumption of components to design circuits that meet specific power requirements
Industrial Applications:
Calculate the power requirements of machinery and equipment to ensure adequate power supply and prevent overloading
Relationship Between Amps & Watts (120 V)
| Current (A) | Voltage (V) | Power (W) |
|---|---|---|
| 1 amps | 120 volts | 120 watts |
| 2 amps | 120 volts | 240 watts |
| 3 amps | 120 volts | 360 watts |
| 4 amps | 120 volts | 480 watts |
| 5 amps | 120 volts | 600 watts |
| 6 amps | 120 volts | 720 watts |
| 7 amps | 120 volts | 840 watts |
| 8 amps | 120 volts | 960 watts |
| 9 amps | 120 volts | 1080 watts |
| 10 amps | 120 volts | 1200 watts |
How Many Amps & Watts do Household Appliances Use?
| Domestic Portable Appliance | Amps Used | Watts Used |
|---|---|---|
| Laptop | <0.5 | Up to 100 |
| Mobile phone charger | <0.5 | Up to 75 |
| Chargers for battery operated devices | <0.5 | Up to 75 |
| Battery chargers for tools | 1.5 | Up to 350 |
| Fridge (under counter type) | 0.75 | 100 |
| Mini Fridge | 0.5 | 100 |
| Fridge Freezer (Standard) | 1.5 | 150 |
| Kettle | Up to 13 | Up to 3000 |
| Satellite TV box/ Streaming devices | <0.5 | 30 |
| Printer | <0.5 | 50 |
| Radio | <0.5 | 15 |
| Radiator or Fan Heater | Up to 13 | Up to 3000 |
| Desk lamp (with LED lamp) | <0.5 | 5 |
| DVD | <0.5 | 20 |
| Hair Dryer | 10.0 | 2200 |
| Hair Straighteners | <0.5 | Up to 100 |
| Computer monitor | <0.5 | 25 |
| Desktop Computer | 1.3 | Up to 3000 |
| Television 55” UHDr | <0.5 | 120 |
| Games console | 0.86 | 200 |
| Washing machine | 10 | 2200 |
| Toaster (4 Slice) | 9.0 | 2000 |
| Toaster (2 Slice) | 4.0 | 900 |
| Tumble dryer (Heat Pump) | 3.5 | 800 |
| Iron | 13 | 3000 |
| Dishwasher | 10.0 | 2200 |
| Microwave | 6.5 | 1500 |
| Vacuum cleaner | 9.0 | 2000 |
| Wi-Fi router | <0.5 | 15 |
| Electric Vehicle (Slow Charge) | Up to 13 | Up to 3000 |
| Portable air conditioner | Up to 9.3 | Up to 2000 |
| Alarm clock radio | <0.5 | Up to 6W |
| Slow cooker | <0.5-1.1 | Up to 250W |
| Portable Speaker (Bluetooth/wi-fi) | <0.5 | Up to 65W |
| Toothbrush charger | <0.5 | Up to 2.5W |
FAQs
How many watts are in an amp?
The amount of wattage per amp varies based on the system's voltage. For a DC conversion at 120 volts, 1 amp will be equal to 120 watts.
How many watts is 120 volts?
As we know a volt is a unit of electric potential, similar to the voltage. To find the power you need to know the current (amps) being drawn.
The formula to calculate power is:
Watts = Volts x Amps
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