Volts to Watts Calculator

This tool is designed to help you convert voltage (volts) into power (watts) in just a few simple steps.

Input

Current Type: DC AC - Single phase AC - Three phase
Voltage in Volts:

Voltage Type: Line to Line Voltage Line to Neutral Voltage

Current in Amps:

Power factor (≤1):

Calculate Reset

Output:

Power result in kilowatts:

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Watts to volts calculator ►

DC Volts to Watts Calculation Formula

P_(W) = V_(V)× I_(A), where

P_(W) – power in watts (W),

V_(V) – voltage in volts (V),

I_(A) – electric current in amps (A).

Example.

Let’s say you have a DC circuit with a voltage of 12 volts and a current of 2 amperes. To calculate the power in watts, you would use the formula:

P_(W) = 12 volts x 2 A = 24 W

AC Single Phase Volts to Watts Calculation Formula

P_(W) = PF × I_(A)× V_(V), where

P_(W) – power in watts (W),

PF – power factor (within 0 to 1),

I_(A) – phase current in amps (A),

V_(V) – RMS voltage in volts (V).

Example.

Let’s say you have a single-phase AC circuit with a voltage of 120 volts, a current of 5 amperes, and a power factor of 0.8. To calculate the power in watts, you would use the formula:

P_(W) = 120 V x 5 A x 0.8 = 480 W

AC Three Phase Volts to Watts Calculation Formula

Calculation with Line to Line Voltage

P_(W) = √3 × PF × I_(A)× V_L-L(V), where

P_(W) – power in watts (W),

PF – power factor (within 0 to 1),

I_(A) – phase current in amps (A),

V_L-L(V) – line to line RMS voltage in volts (V).

Example.

Let’s say you have a three-phase AC circuit with a line-to-line voltage of 208 volts, a current of 10 amperes, a power factor of 0.85. To calculate the power in watts, you would use the formula:

P_(W) = √3 * 208 volts x 10 amperes x 0.85 = 3.0622 watts

Calculation with Line to Neutral Voltage

P_(W) = 3 × PF × I_(A) × V_L-N(V), where

P_(W) – power in watts (W),

PF – power factor (within 0 to 1),

I_(A) – phase current in amps (A),

V_L-N(V) – line to neutral RMS voltage (V).

Volts to Watts Conversion Charts

5 Volts to Watts

Amps (A)	Watts (W)
1 A	5 W
2 A	10 W
3 A	15 W
4 A	20 W
5 A	25 W
6 A	30 W
7 A	35 W
8 A	40 W
9 A	45 W
10 A	50 W

12 Volts to Watts

Amps (A)	Watts (W)
1 A	12 W
2 A	24 W
3 A	36 W
4 A	48 W
5 A	60 W
6 A	72 W
7 A	84 W
8 A	96 W
9 A	108 W
10 A	120 W

24 Volts to Watts

Amps (A)	Watts (W)
1 A	24 W
2 A	48 W
3 A	72 W
4 A	96 W
5 A	120 W
6 A	144 W
7 A	168 W
8 A	192 W
9 A	216 W
10 A	240 W

36 Volts to Watts

Amps (A)	Watts (W)
1 A	36 W
2 A	72 W
3 A	108 W
4 A	144 W
5 A	180 W
6 A	216 W
7 A	252 W
8 A	288 W
9 A	324 W
10 A	360 W

48 Volts to Watts

Amps (A)	Watts (W)
1 A	36 W
2 A	72 W
3 A	108 W
4 A	144 W
5 A	180 W
6 A	216 W
7 A	252 W
8 A	288 W
9 A	324 W
10 A	360 W

110 Volts to Watts

Amps (A)	Watts (W)
1 A	110 W
2 A	220 W
3 A	330 W
4 A	440 W
5 A	550 W
6 A	660 W
7 A	770 W
8 A	880 W
9 A	990 W
10 A	1100 W

120 Volts to Watts

Amps (A)	Watts (W)
1 A	120 W
2 A	240 W
3 A	360 W
4 A	480 W
5 A	600 W
6 A	720 W
7 A	840 W
8 A	960 W
9 A	1080 W
10 A	1200 W

220 Volts to Watts

Amps (A)	Watts (W)
1 A	220 W
2 A	440 W
3 A	660 W
4 A	880 W
5 A	1100 W
6 A	1320 W
7 A	1540 W
8 A	1760 W
9 A	1980 W
10 A	2200 W

230 Volts to Watts

Amps (A)	Watts (W)
1 A	230 W
2 A	460 W
3 A	690 W
4 A	920 W
5 A	1150 W
6 A	1380 W
7 A	1610 W
8 A	1840 W
9 A	2070 W
10 A	2300 W

240 Volts to Watts

Amps (A)	Watts (W)
1 A	240 W
2 A	480 W
3 A	720 W
4 A	960 W
5 A	1200 W
6 A	1440 W
7 A	1680 W
8 A	1920 W
9 A	2160 W
10 A	2400 W

See Also