Residential Fertilizer Calculator

Fertilizer Calculator
Total Nitrogen is the first of the three large numbers on a fertilizer bag and is also listed on the label. Click image above to enlarge for easier reading.
Enter Total Nitrogen: * %
Find the percent of slow-release nitrogen on the label.
Enter Slow-Release Nitrogen: * %
Orange County requires your fertilizers be 50% slow-release nitrogen.
Slow-Release Nitrogen Percentage: %

Fertilizer per 1,000 sq ft: lbs
Calculate length x width or try to visualize how many parking spaces or volleyball courts would fill your yard. A parking space is about 100 square feet and half a volley ball court is 1000 square feet.
Enter sq ft of yard: * sq ft
This is how many pounds of fertilizer you need for your yard. Measure out the pounds with a scale or take the portion of fertilizer you need based on how many pounds are in one bag.
Amount of Fertilizer to apply: lbs

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