Lawn Fertilizer Calculator
Calculate how much fertilizer to apply to your lawn. Enter your lawn size and fertilizer NPK ratio to get precise application rates.
Fertilizer
Calculate how much fertilizer to apply to your lawn. Enter your lawn size and fertilizer NPK ratio to get precise application rates.
Application rates vary by grass type and season. Always follow fertilizer label instructions and local regulations.
Important Disclaimer
Application rates vary by grass type and season. Always follow fertilizer label instructions and local regulations.
About This Calculator
Proper fertilizer application keeps your lawn healthy without wasting product or harming the environment. This calculator helps you determine exactly how much fertilizer to apply based on your lawn size and the fertilizer's nitrogen content.
How It Works
Enter your lawn size, select the desired nitrogen application rate, and input the first number (N) from your fertilizer's NPK ratio. The calculator determines how many pounds of fertilizer you need.
Frequently Asked Questions
Clinical Review
Dr. Igor I. Bussel is a board-certified ophthalmologist and fellowship-trained surgeon affiliated with the University of California, Irvine (UCI), the Gavin Herbert Eye Institute, and the UCI School of Medicine.
Sources & Guidelines
- University Extension Services. "Lawn Fertilization Guidelines."
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