NPK Fertilizer Calculator
Enter the area to be fertilized:
square feet
Now, enter the amount of nitrogen (N) you want to apply:
lbs per 1000 square feet
Finally, enter the amounts (%) of nitrogen (N), phosphorus (P), and potassium (K) for the fertilizer you will apply: (14-7-7, for example)
Results:
______ pounds of your selected fertilizer will be needed to cover your ______ square feet area.
The rate is ______ lbs of fertilizer per 1000 square feet, or ______ lbs of fertilizer per acre.