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

## Net Productivity Formula

NPP = GPP - R

Variables:

- 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.

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