Enter the gross primary productivity and the respiration into the Calculator. The calculator will evaluate the Net Productivity. 

Net Productivity Formula



  • NPP is the Net Productivity ()
  • GPP is the gross primary productivity
  • R is the respiration

To calculate the Net Productivity, subtract the respiration from the gross primary productivity.

How to Calculate Net Productivity?

The following steps outline how to calculate the Net Productivity.

  1. First, determine the gross primary productivity. 
  2. Next, determine the respiration. 
  3. Next, gather the formula from above = NPP = GPP – R.
  4. Finally, calculate the Net Productivity.
  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.

gross primary productivity = 1780

respiration = 200