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    Amps (A) to Watts (W) Conversion Calculator | Amps to Watts Convert | Amps to Watts formula

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    Amps (A) to Watts (W) Conversion Calculator

    How to convert amps (A) to Watts (W) calculation for DC Line, single-phase & 3-phase conversion. amps to Watts formula. amps to watts law: Amps x Volts = Watts. 20 Amps x 120 Volts = 1400 Watts · Amps. Amps measure the flow of electricity as an electric current.

    Amps To Watts Calculator

    A
    • Picoampere (pA)
    • nanoamperes (nA)
    • microamperes (µA)
    • milliamperes (mA)
    • Amperes (A)
    • kiloamperes (kA)
    V
    • nanoVolts (nV)
    • microVolts (µV)
    • milliVolts (mV)
    • Volts (V)
    • kilovolts (kV)
    • megavolts (MV)
    W
    • nanowatts (nW)
    • microwatts (µW)
    • milliwatts (mW)
    • Watts (W)
    • Kilowatts (KW)
    • megawatts (MW)
    • gigawatts (GW)

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    What do you need to know to calculate AC Watttage?

    Enter Current I in Amps A, Voltage in volts v, or Power factor in pf and press the calculate button to get the Real power P in watts w:

    Amps to Watts Calculator
    Fig-1: Amps to Watts Calculator

    Conversion using the Amps to Watts Formula

    How to Calculate wattage from amps and volts using DC line current.

    The Real Power P in watts w is calculated as the Current I amps A, times the voltage in volts v. Plug these values into the formula:

    Watts = Amps × Volts

    For Example, DC circuit with a current of 5 Amps and a voltage of 12 Volts, the power is Watts.

    Real Power(P) = Current(I) × Voltage(V)
    or, P(W) = 5 amps × 12 volts
    or, Real Power = 60 watts

    How to Calculate wattage from amps, volts and power factor using AC Single Phase current.

    The Real Power P In watts w is calculated as the Power factor in pf times the phase current I in amps A, times the RMS Voltage in volt v. Plug these values into the formula:

    Watts = pf × Amps × Volts

    For Example, If the Voltage consumption is 220V with a phase current of 10A and a power factor of 0.8 the Real Power is watts.

    Real Power(P) = Power factor(pf) × Current(I) × Voltage(V)
    or, P(w) = 0.8 × 10 amps × 220 volts
    or, Real Power = 1760 watts

    How to Calculate wattage from amps, volts and power factor using AC 3-phase current for Line-to-Line Voltage.

    The Real Power P in Watts w is calculated as the square root of 3 times the Power factor in pf times the 3 phase current I in amps A, times the line-to-line RMS Voltage VL-L in volts v. Plug these values into the formula:

    Watts = 3 × pf × Amps × Volts

    For Example, 3-phase system with 10 Amps of current, 400 Volts line-to-line voltage, and a power factor of 0.8, the power is approximately

    Real Power(P) = 3 × Power factor(pf) × Current(I) × Voltage(line-line)
    or, P(W) = 3 × 0.8 × 10 amps × 400 volts
    or, Real Power = 5542.4 Watts

    How to Calculate wattage from amps, volts and power factor using AC 3-phase current for Line-to-Neutral Voltage.

    The Real Power P in Watts w is calculated as the 3 times the Power factor in pf times the 3 phase current I in amps A, times the line-to-line RMS Voltage VL-L in volts v. Plug these values into the formula:

    Watts = 3 × pf × Amps × Volts

    For Example, 3-phase system with 15 Amps of current, 440 Volts line-to-Neutral voltage, and a power factor of 0.8, the power is approximately Watts:

    Real Power(P) = 3 × Power factor(pf) × Current(I) × Voltage(line-Neutral)
    or, P(W) = 3 × 0.8 × 15 amps × 440 volts
    or, Real Power = 18810 watts

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    How to use Amps to Watts Calculator?

    To use the above "Amps to Watts Conversion Calculator" follow the below steps:

    1. Select Phase Type: Choose between DC Line, Single Phase Line, or 3 Phase Line by choosing the appropriate option from the dropdown.

    2. Enter Current: Input the Current in Amps value in the specified input box. You can enter the value in milliamps mA, Amps A, Kiloamps kA, or Megaamps MA by choosing the appropriate option from the dropdown.

    How to Use Amps to Watts Calculator
    Fig-2: How to Use Amps to Watts Calculator

    3. Enter Supply Voltage: Input the supply voltage or Load voltage value in the specified input box. You can enter the value in millivolts mV, Volts V, Kilovolts kV & MegaVolt MV by choosing the appropriate option from the dropdown.

    4. Enter Power Factor: Input the power factor of the Load in the provided input box. The power factor is a unitless value typically between 0 and 1.

    5. Select Voltage Type: Choose between Line to Line Voltage or Line to Neutral Voltage by choosing the appropriate option from the dropdown.

    6. Reset: Click the Reset If you want to reset the calculator to perform another conversion, you can click the Reset button, and all input fields will be cleared.

    7. Calculate: Click the Calculate button to obtain the results. The calculated results will be displayed in the Results: section.

    8. Swap: If you want to Swap the calculated to Exchange conversion, you can click the Swap button, and Calculate will be Exchange.

    9. Result: The calculated "Result" will be displayed in the respective Result In output Watts output field.

    Amps To Watts conversion application

    Amps To Watts Conversion Chart

    Below is a table assuming PF = 1 for simplicity, with varying current values:

    Amps to Watts Conversion (DC, Single Phase, Three Phase)
    InputOutput
    Current
    (Amps)    		Voltage
    (Volts)    		DC
    (Watts)    		Single Phase
    (Watts)    		3 Phase
    (Watts)
    1120120120208
    51206006001038
    10120120012002076
    20120240024004152
    1220220220381
    5220110011001906
    10220220022003812
    20220440044007624

    Typical power factor values

    Do not use typical power factor values for accurate calculations.

    Equipment and appliancescos θtan θ
    MotorCommon induction motorloaded at0 %0.175.80
    25%0.551.52
    50 %0.730.94
    75 %0.800.75
    100 %0.850.62
    LampsIncandescent lamps1.00
    Fluorescent lamps (uncompensated)0.51.73
    Fluorescent lamps (compensated)0.930.39
    Discharge lamps0.4 to 0.62.29 to 1.33
    OvensOvens using resistance elements1.00
    Induction heating ovens (compensated)0.850.62
    Dielectric type heating ovens0.850.62
    WeldingResistance-type soldering machines0.8 to 0.90.75 to 0.48
    Fixed 1-phase arc-welding set0.51.73
    Arc-welding motor-generating set0.7 to 0.91.02 to 0.48
    Arc-welding transformer-rectifier set0.7 to 0.81.02 to 0.75
    Arc furnace0.80.75
    Power Factor Value Conversion Table

    Frequently Asked Questions - FAQs for Name Calculator

    How do you calculate ampere?

    Current (A) = Real Power (W) ÷ Voltage (V).

    How to calculate voltage?

    When spelled out, it means voltage = current (A) × resistance (ohm) , or volts = amps × ohms, or V = A × Ω.

    How many kVA in 1 amp?

    The electrical efficiency is typically expressed as a power factor between 0 and 1. The closer the power factor rating is to 1, the more efficiently the kVA will be converted into kilowatts.

    How to calculate the power formula?

    The formula for power in watts is given by the work and the time. The formula is P = W ÷ t, where W is the work done in some time t.

    What is called 1 volt?

    1 Volt is defined as energy consumption of 1 joule per electric charge of 1 coulomb.

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    About the Author

    Md Jony Islam

    Md Jony Islam

    Jony is a passionate writer and web developer. He enjoys sharing insights about technology, web development, and design. When he's not writing, he loves hiking and exploring the outdoors.