Fertilizer Calculator

Calculate how much fertilizer you will need for your area.

Nitrogen Rate to Apply

[In Pounds per 1000 Square Feet]

% of Nitrogen on bag [N-P-K]

Select the Area to be Fertilized

Need a different unit? Use the Conversion Calculator

Fertilizer Application Rate Formula

Lbs. of fertilizer per 1,000 ft sq. ft. =  Rate% of N

Total lbs. of fertilizer = Lbs. of fertilizer per 1,000 sq. ft. Area(Area1,000)

Variables

Rate = Rate of Nitrogen in pounds to apply per 1,000 square feet

% of N = Percent of Nitrogen listed on bag

Area = Size of area to be fertilized in square feet

Constants

1000: For general lawn fertilization, 1 pound of actual nitrogen is recommended per 1,000 square feet per application