Welcome to **4 watts to amps**, which stands for 4 watts to amperes.

If you have been wondering *how many amps is 4 watts*, then you have come to the right page, too.

To obtain 4 watts in amps in case of direct current (DC), we only have to know the potential difference in volts (V).

To be able to transform 4 watts to amps with alternating current (AC), we additionally must know the power factor, the number of phases and perhaps the voltage type.

## Convert 4 Watts to Amps

To convert 4 watts to amps, thereby changing power (P) to current (I), consider the criteria below. Next apply the corresponding 4 watts (W) to amps (A) formula further down.

For the conversion of 4 watts to amps check whether your electric current is of type direct or alternating flow of electric charge, as explained in details on our article Watts to Amps.

For alternating currents, the 4 watts amps transformation is different for a single phase and a three phase system; the power factor is needed in both cases.

In case of the three-phase electrical generation, line to line voltage and line to neutral voltage require different constants to convert 4 watts to amps, (√3) and 3, respectively.

- DC: I
_{(A)}= 4 W / V_{(V)} - AC, Single Phase: I
_{(A)}= 4 W / (PF × V_{(V)}) - AC, Three Phase, Line to Line Voltage: I
_{(A)}= 4 W / (√3 × PF × V_{L-L(V)}) - AC, Three Phase, Line to Neutral Voltage: I
_{(A)}= 4 W / (3 × PF × V_{L-0(V)})

In an alternating current circuit, the power factor (PF) is the quotient of real power / apparent power with a value in between 0 and 1: 0 ≤ PF ≤ 1; real power here is = 4 W.

The next paragraph exemplifies a number of 4 watts to amps calculations.

Next, we will answer

*what is the current in amperes if the power consumption is 4 W and the voltage supply is 110 V*?

## 4 Watts to Amps Conversion

From our formulas follows that in order to convert 4 watts in amps we must know the voltage. Assumed the PF is 0.5, and supposed the voltage is 110 V, we get these result:

- DC: I = 4 W / 110 V = 0.04 A
- AC, Single Phase: I = 4 W / (0.5 × 110 V) = 0.07 A
- AC, Three Phase, Line to Line Voltage: I = 4 W / (√3 × 0.5 × 110 V) = 0.04 A
- AC, Three Phase, Line to Neutral Voltage: I = 4 W / (3 × 0.5 × 110 V) = 0.02 A

Instead of applying the formulas use our watts to amps converter. Insert, for example, 4 for the power in watts; your voltage in volts is also required for all conversions.

Depending on your selected current and the number of phases, the power factor as well as the voltage type may also have to be entered to transform 4 watt to amp.

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Besides four watts to amps, other power to current conversions on our site include:

## 4 Watts to Amperes

If you have been looking for *4 watt how many amps*, then you have found all the information here on our website. Frequently asked question in the context of our post are:

- How many amps in 4 watts?
- 4 watts how many amps?
- How much is 4 watts in amperes?
- How many amps in a 4 watts?
- How many amps per 4 watts?

As you know, the answer to the equation 4 watt = amp depends on various parameters:

For example, *how many amps is 4 watts at 240 volts* has only one result for direct current, abbreviated as DC, but three possibilities in case of AC, short for alternating current.

In the order of the drop-down menu of our converter, and in the sequence of our explanations and formulas above, they are (PF=0.5) 0.02, 0.03, 0.02 and 0.01 amperes, respectively.

Likewise, 4 watts at 220 volts to amps is 0.02, 0.04, 0.02, 0.01 A. Finally, 4 watts to amps 120 volts = 0.03, 0.07, 0.04 and 0.02 amperes.

Note that you can also locate many conversions, including 4 watt to amps, using the search form in the sidebar. Insert, for instance, 4 watts to amps calculator.

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