Fertilizer Calculator
Calculate fertilizer amounts for lawns and gardens. Determine application rates based on NPK values and area coverage.
How to Calculate Fertilizer Application
- 1 Enter your lawn or garden area size
- 2 Select the area type (lawn, garden, flower bed)
- 3 Enter the fertilizer NPK ratio or select a common type
- 4 Choose the application rate (light, standard, or heavy)
- 5 View the amount needed and nutrients applied
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Last updated: January 15, 2026 · v2.1