The purpose of this calculator is two fold:

  1. Answer the question “If I need 100 lbs./Kg of actual nitrogen (N), how many lbs./Kg of calcium nitrate (or any other source of N) would I need?”
  2. Answer the question “How much does a lb./Kg of N in calcium nitrate cost when compared to other sources of N?”

Using the fertilizer calculator:

  1. Select the nutrient, the quantity needed, the units and the compound. Press calculate. The answer will be the amount of total fertilizer needed.
  2. Input the cost per unit in any currency. The answer will be the cost of the nutrient per lb./Kg. 
    By repeating the process for other fertilizer compounds you can compare the relative cost of a unit of nutrient.


Go to the Fertilizer Calculator