Volts (V) to Watts (W) Conversion Calculator

convert different wattages with one simple formula! Or, use our handy calculator to convert amps, watts, and volts easily. Volts to Watts formula. formula, here are the volts to watts conversion chart. Volts (V). Amp (A). Watts (W). Enter the Voltage (V) in volts (V), Current (I) in amps (A), and press the calculate button to get the Real Power (P) in Watts (W).

Volts To Watts Calculator

Current type

Voltage (volts)

Current (Amps)

Select Voltage Type

Power factor (≤1)

Real Power (watts)

Real Power (kilo-watts)

Learn how we tools this below

Add this tools to your site

Buy me a for Source Code

Conversion using the Volts to Watts Formula

DC Volts to Watts Calculation formula

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

Real Power(P) = Voltage(V) × Current(I)

or, P(W) = V(V) × I(I)

or, Watts = Volts × Amps

For Example, let's convert 48 volts to watts for a DC Line circuit with 10 amps of current.

Single Phase Volts to Watts Calculation formula

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 volts v. Plug these values into the formula:

Real Power(P) = Power factor(pf) × Current(I) × Voltage(V)

or, P(W) = pf × I(A) × V(V)

or, Watts = pf × Amps × Volts

For Example, let's convert 220 volts to watts for an AC electrical circuit with 30 amps of current and a power factor of 0.9.

3-Phase Volts to Watts Calculation formula

Calculation with 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 phase current I in amps A, times the line-to-line RMS voltage V_L-L in volts v. Plug these values into the formula:

Real Power(P) = 3 × Power factor(pf) × Current(I) × Voltage(V)

or, P(W) = 3 × pf × I(A) × V(V)

or, Watts = 3 × pf × Amps × Volts

For Example, let’s convert 440 Volts to watts for an AC Electrical circuit with 35 amps of current and a power factor of 0.8

Calculation with Line to Neutal voltage

The Real Power P in watts w is calculated as the 3 times the power factor in pf times the phase current I in amps A, times ths line-to-neutral RMS Voltage _L-N in volts v. Plug these values into the formula:

Real Power(P) = 3 × Power factor(pf) × Current(I) × Voltage(V)

or, P(W) = 3 × pf × I(A) × V(V)

or, Watts = 3 × pf × Amps × Volts

For Example, let’s convert 440 Volts to watts for an AC Electrical circuit with 25 amps of current and a power factor of 0.9.

How to use Volts to Watts Calculator?

To use the above "Volts 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 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.

Fig-2: How to Use Volts to Watts Calculator

3. 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.

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. 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.

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

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

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

Typical power factor values

Do not use typical power factor values for accurate calculations.

Equipment and appliances				cos θ	tan θ
Motor	Common induction motor	loaded at	0 %	0.17	5.80
			25%	0.55	1.52
			50 %	0.73	0.94
			75 %	0.80	0.75
			100 %	0.85	0.62
Lamps	Incandescent lamps			1.0	0
	Fluorescent lamps (uncompensated)			0.5	1.73
	Fluorescent lamps (compensated)			0.93	0.39
	Discharge lamps			0.4 to 0.6	2.29 to 1.33
Ovens	Ovens using resistance elements			1.0	0
	Induction heating ovens (compensated)			0.85	0.62
	Dielectric type heating ovens			0.85	0.62
Welding	Resistance-type soldering machines			0.8 to 0.9	0.75 to 0.48
	Fixed 1-phase arc-welding set			0.5	1.73
	Arc-welding motor-generating set			0.7 to 0.9	1.02 to 0.48
	Arc-welding transformer-rectifier set			0.7 to 0.8	1.02 to 0.75
Arc furnace				0.8	0.75
Power Factor Value Conversion Table

Frequently Asked Questions - FAQs for Volts to Watts Calculator

What is 220V in watts?

220V refers to voltage. A watt is a unit that expresses Real power, according to Real power = voltage × current, so if the current is 20A, the power corresponding to the voltage of 220V is 4400W.

How to calculate volts?

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

Difference Between Watts and Volts

differences between watts and volts are given here in detail. Both volts and watts are related to each other. 1 watt is defined as the energy required by 1 ampere of current to flow through the potential difference of 1 volt.

How to find wattage?

Amps multiplied by Volts equals Watts, which is the measurement used to determine the amount of energy. The higher the wattage is, the more Real power and output from the appliance.

What is a Watts calculator?

How do you calculate watts? - Watt's equation. Our calculator is based on the 2 laws that describe simple electrical circuits. 1 of them - Watt's law - states that: Power = Voltage × Current - in symbols: P = V × I.

About the Author

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.

Volts (V) to Watts (W) Conversion Calculator | Volts to Watts Convert | Volts to Watts formula