Enter the total weight (g) and the total power (watts) into the Calculator. The calculator will evaluate the Grams Per watt. 

Grams Per Watt Formula

GPW = W / P


  • GPW is the Grams Per Watt (g/watt)
  • W is the total weight (g)
  • P is the total power (watts)

To calculate Grams Per Watt, divide the total weight by the total power in watts.

How to Calculate Grams Per Watt?

The following steps outline how to calculate the Grams Per Watt.

  1. First, determine the total weight (g). 
  2. Next, determine the total power (watts). 
  3. Next, gather the formula from above = GPW = W / P.
  4. Finally, calculate the Grams Per Watt.
  5. After inserting the variables and calculating the result, check your answer with the calculator above.

Example Problem : 

Use the following variables as an example problem to test your knowledge.

total weight (g) = 780

total power (watts) = 1000