Watts (W) to Volts (V) Conversion Calculator

Convert watts to volts with a simple electrical conversion calculator. See three conversion formulas for an AC or DC circuit. watts to volts calculator by inserting W and A. Further on, you'll find a conversion chart with calculated volts from watts at certain amps.

Watts To Volts Calculator

Select Current type

Real Power (Watts):

Current (Amps):

Select Voltage Type:

Power factor (≤1)

Voltage (Volts)

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Conversion using the Watts to Volts Formula

DC Watts to Volts Calculation formula

The Voltage V in Volts V is calculated as the Real Power P in watts w, divided by the Current I in amps A. Plug these values into the formula:

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

or, V(V) = P(W) I(A)

or, Volts = Watts Amps

For Example, let's convert 60 watts to volts using a DC circuit with 6 amps of current.

Single Phase Watts to Volts Calculation formula

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

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

or, V(V) = P(W) pf × I(A)

or, Volts = Watts pf × Amps

For Example, let's convert 1400 watts to voltage for an AC electrical circuit with 8 amps of current and a power factor of 0.8.

3-Phase Watts to Volts Calculation formula

Calculation with Line to Line voltage

The Line-to-Line RMS voltage V_L-L in volts v is calculated as the Real Power P in watts w, divided by the square root of 3 times the Power factor in pf times the phase current I in amps A. Plug these values into the formula:

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

or, V(V) = P(W) 3 × pf × I(A)

or, Volts = Watts 3 × pf × Amps

For Example, let's convert 800 watts to volts for an AC Electrical circuit with 10 amps of current and a power factor of 0.8.

Calculation with Line to Neutal voltage

The Line to Neutral RMS voltage V_L-N in volts v is calculated as the Real Power p in watts w, divided by 3 times the Power factor in pf times the phase current I in amps A. Plug these values into the formula:

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

or, V(V) = P(W) 3 × pf × I(A)

or, Volts = Watts 3 × pf × Amps

For Example, let's convert 1200 watts to voltage for an AC electrical circuit with 12 amps of current and a power factor of 0.8.

How to use Watts to Volts Calculator?

To use the above "Watts to Volts 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 Real Power: Input the Real Power in watts or Load watts value in the specific input box. You can enter the value in millivolts mw, Watts W, kilowatts KW, & Megawatts MW by choosing the appropriate option from the dropdown.

Fig-2: How to Use Watts to Volts 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. Select Voltage Type: Choose between Line to Line Voltage or Line to Neutral Voltage by choosing the appropriate option from the dropdown.

5. 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.

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 Volts output field.

Watts to Volts Conversion Chart

DC, Single-Phase, and Three-Phase Systems

Below is a table assuming PF = 1 for simplicity, with varying current values:
Input		Output
Current (Amps)	Real Power (Watts)	Voltage (DC)	Voltage (Single-Phase AC)	Voltage (3-Phase AC)
10	100	10 V	10 V	5.77 V
10	500	50 V	50 V	28.87 V
10	1000	100 V	100 V	57.73 V
20	1000	50 V	50 V	28.87 V
20	2000	100 V	100 V	57.73 V
50	5000	100 V	100 V	57.73 V
50	10000	200 V	200 V	115.47 V

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 - Watts to Volts Conversion FAQs:

How much watts is 2 ampere?

The wattage in one amp depends on the voltage of the system. Using the formula for DC conversion: Watts = Amps × Volts, at 120 volts, 2 amps would equal 240 watts. Remember, the relationship between amps and watts is directly influenced by the voltage.

What is AC power factor?

Power factor is defined as the ratio of the average power supply in an AC circuit to the apparent power, which is the product of the voltage and current magnitudes. (1.77) Power factor = average power apparent power = p S. Power factor (PF) has a value between 0 and unity.

What is watt and voltage?

Volt is the measure of potential difference within 2 terminals of a conducting wire. A Watt is the rate at which electrical working is performed when a current of 1 ampere flows across the potential difference of 1 volt.

What is 1 amp?

1 ampere is the current in which one coulomb of charge travels across a given point in 1 second. That's why an average lightning bolt carries around 5 coulombs of charge, even though its current may be tens of thousands of amps.

What is Volts in 12v?

A measured in volts (V), stands as a fundamental concept in the realm of electronics, representing the electrical pressure that propels current flow through a circuit.

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.

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