Mobile phone generally donâ€™t mentions or print the wattage rating on the charger itself, they specify the input and output rated dc voltage and current. Nobody knows what could be the reason. But we know how to calculate charger watt and is discussed below after the Charger Watt Calculator online tool.

### How to use this Charger watt calculator?

Put the **Maximum DC Output Voltage **& corresponding rated **Current** value printed on your mobile phone charger. Also make sure you are adding highest DC rated output, this is because the latest chargers come with programmable output that also backward compatible with standard chargers.

### All Charger Watt (Enter the Heighest Rated Specification printed on Charger)

Now lets know how to manually calculate the wattage rating of any charger using some simple formulas:

Calculating the wattage rating of a mobile charger involves simple power (in watts) formulas.

**Identify the Voltage and Current**: Check the charger’s specifications, usually printed on the charger itself. Look for the output voltage (V) and current (A). These are printed as something like “Output: 5V 1.55A” or “9V 2.7A” or “11V 2.25A”

**Consider Different Voltage Levels**: Some chargers provide multiple output voltages for different devices. Always use the highest voltage for calculating the maximum wattage. For instance, if a charger offers 5V, 9V, or 11V outputs with corresponding currents, calculate the heighest and identify the maximum wattage.**The basic formula to calculate wattage (W) is:**Wattage (W) = Voltage (V)Ã—Current (A)**Example calculation:**Multiply the voltage by the current. For example, if your charger outputs 5 volts and 1 amps:$W (This is rated charging power but actual rating of charger is higher than this! means the charger could be 10 watts)$**Does my charger support Fast charging?**

- If the output shows a 5V only, it indicates standard charging.
- If the output have 9V, it suggests fast charging.
- If the output mentioned 11V or 12V, it implies super fast charging.

Frequently Asked Questions:

1. How many watts is my mobile phone charger?

You can check the power rating in watt, by just checking highest output voltage and its current rating. Now multiply V & I to get watts. Example if your charger is rated 9 volts and 2 amp, then wattage is approx (9 x 2=18 Watts).

2. Is 25 watt fast charging?

Yes, 25 watt is fast charging. But it also depends on mobile phone to charge normal or fast.