Rate (lbs N / 1000 sq ft) × area / (N % in bag / 100). Always follow soil test.

Cool season: spring/fall; warm season: late spring/summer. Avoid heat or drought.

Fertilizer for Lawn Calculator

Calculate the total amount of fertilizer needed for your lawn based on its size and the desired Nitrogen application rate.

Calculate how much fertilizer product to apply to your lawn based on a desired Nitrogen rate.

Lawn Area (sq ft)

Desired Rate (lbs N / 1000 sq ft)

Fertilizer's N Value (%)

The full supporting guide for this calculator is still being expanded. The tool remains accessible while we improve the educational content.

Continue with calculators that answer nearby questions and help compare the next step.

Calculate the amount of grass seed needed for a new lawn or for overseeding an existing lawn.

Calculate the actual weight of Nitrogen (N), Phosphorus (P), and Potassium (K) in a bag of fertilizer based on its NPK ratio.

Related Calculators