To calculate watts from amps, you need to know the voltage. The formula is:
\[
\text{Watts} = \text{Amps} \times \text{Volts}
\]
If you're using a standard voltage of 120V (like in many homes in the U.S.), the calculation would be:
\[
\text{Watts} = 2.4 \, \text{amps} \times 120 \, \text{volts} = 288 \, \text{watts}
\]
If you have a different voltage, just multiply 2.4 amps by that voltage to get the wattage.