Enter the total weight of nitrogen (lbs) and the total weight of the bag (lbs) into the Nitrogen Rate Calculator. The calculator will evaluate the Nitrogen Rate. 

Nitrogen Rate Formula

The following two example problems outline the steps and information needed to calculate the Nitrogen Rate.

NR = WN / WB *100
  • Where NR is the Nitrogen Rate (%)
  • WN is the total weight of nitrogen (lbs) 
  • WB is the total weight of the bag (lbs) 

To calculate the nitrogen rate, divide the total weight of nitrogen by the weight of the bag.

How to Calculate Nitrogen Rate?

The following example problems outline how to calculate Nitrogen Rate.

Example Problem #1:

  1. First, determine the total weight of nitrogen (lbs).
    • The total weight of nitrogen (lbs) is given as: 40.
  2. Next, determine the total weight of the bag (lbs).
    • The total weight of the bag (lbs) is provided as: 100.
  3. Finally, calculate the Nitrogen Rate using the equation above: 

NR = WN / WB * 100

The values provided above are inserted into the equation below and computed.

NR = 40 / 100 * 100 = 40.00 (%)


Example Problem #2: 

For this problem, the variables required are provided below:

total weight of nitrogen (lbs) = 5

total weight of the bag (lbs) = 10

Test your knowledge using the equation and check your answer with the calculator..

NR = WN / WB * 100 = ?