NPK CALCULATOR

This calculator is necessary for calculating nutrient solutions for soil and hydroponics. Knowing your Nitrogen, Phosphorus and Potassium, you will receive recommendations in various concentrations for the selection of calcium, magnesium, sulfur and trace elements from well-deserved primary sources: the experience of the fertilizer manufacturer GHE, Jorge Cervantes and the advice of the OLC forum.

You can enter numbers in all yellow columns, the recommended values will appear to the left of the element in horizontal lines. When hovering over some cells, hints pop up.

For the calculation it is necessary to enter phosphorus, nitrogen and potassium in the vertical columnK and press the CALCULATE button.

and we see the recommendations based on the rows:

the entire 8th row is responsible for calcium Ca, the 9th row is responsible for magnesium Mg, the 12th row is responsible for Fe and so on.

In order to calculate the proportionality of the concentration of solutions as a percentage, it is necessary to use the vertical columns K and L.

All the numbers in column K when moving the slider in column L (row No. 3) or using the keyboard with the left /right arrows (to move the slider smoothly), we can increase the concentration, moving one division increases the concentration by 1%, moving 100 divisions increases concentration by 100%.