Enter the total current in amps and the total voltage in volts into the calculator. The calculator will convert the amps to watts. This calculator can also convert watts to amps.
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| Calculator Operations | Required Inputs |
|---|---|
| Convert Watts and Amps to Volts | Watts, Amps |
| Convert Watts and Volts to Amps | Watts, Volts |
| Convert Volts and Amps to Watts | Volts, Amps |
Amps to Watts Formula
The following equation can be used to convert the total number of amps into the total number of watts. In other words the total current to total power.
P = I * V
- Where P is power in watts
- I is the current in amps
- V is the voltage in volts
To calculate watts from amps, multiply the amps by the voltage.
| Amps (A) | Watts (W) at 5 V | Watts (W) at 12 V | Watts (W) at 24 V | Watts (W) at 120 V | Watts (W) at 230 V |
|---|---|---|---|---|---|
| 0.1 | 0.5 | 1.2 | 2.4 | 12 | 23 |
| 0.2 | 1 | 2.4 | 4.8 | 24 | 46 |
| 0.5 | 2.5 | 6 | 12 | 60 | 115 |
| 0.75 | 3.75 | 9 | 18 | 90 | 172.5 |
| 1 | 5 | 12 | 24 | 120 | 230 |
| 1.5 | 7.5 | 18 | 36 | 180 | 345 |
| 2 | 10 | 24 | 48 | 240 | 460 |
| 2.5 | 12.5 | 30 | 60 | 300 | 575 |
| 3 | 15 | 36 | 72 | 360 | 690 |
| 5 | 25 | 60 | 120 | 600 | 1150 |
| 7.5 | 37.5 | 90 | 180 | 900 | 1725 |
| 10 | 50 | 120 | 240 | 1200 | 2300 |
| 12 | 60 | 144 | 288 | 1440 | 2760 |
| 15 | 75 | 180 | 360 | 1800 | 3450 |
| 20 | 100 | 240 | 480 | 2400 | 4600 |
| 25 | 125 | 300 | 600 | 3000 | 5750 |
| 30 | 150 | 360 | 720 | 3600 | 6900 |
| 40 | 200 | 480 | 960 | 4800 | 9200 |
| 50 | 250 | 600 | 1200 | 6000 | 11500 |
| 60 | 300 | 720 | 1440 | 7200 | 13800 |
| Assumes power factor (pf) = 1 (DC or purely resistive load). Formula: P (W) = V (V) × I (A). Common voltages shown: 5 V (USB), 12 V (automotive), 24 V (industrial/PoE), 120 V (NA mains), 230 V (EU mains). | |||||
Amps to Watts Definition
Converting amps to watts involves multiplying the total current in amps by the total voltage to yield the total watts.
Amps to Watts Example
How to calculate watts from amps
- First, determine the total current
Measure or calculate the total current of the circuit in amps.
- Next, determine the total voltage
Using a voltmeter or equation, calculate the total volts of the circuit.
- Finally, calculate the power
Calculate the power, also known as the total number of watts.
FAQ
Watts are a measure used in physics to represent total electric power. This value is derived from the current and electric potential of the system.
