Calculate exactly how much fertilizer your lawn needs based on soil science.
1
Lawn Area
Please enter a valid lawn area greater than zero.
Please enter valid length and width values.
2
Fertilizer Analysis (N-P-K)
Enter the guaranteed analysis from your fertilizer bag.
N-P-K values must be between 0–100 and their sum cannot exceed 100%.
3
Target Nitrogen Rate
Please enter a valid target nitrogen rate greater than zero.
📋 Agronomy Reference: Standard lawn recommendations typically range from 0.5 to 1.0 lb of Nitrogen per 1,000 sq ft. Cool-season grasses often thrive at 0.75–1.0 lb, while warm-season grasses may prefer 0.5–0.75 lb per application.
📊 Results
Total Fertilizer Required
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🔬 Nutrient Breakdown (Total Applied)
Nitrogen (N)
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Phosphorus (P)
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Potassium (K)
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