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Lawn Fertilizer Calculator — Nitrogen Rate to Product Pounds

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Treated area (ft²) Chosen N target (lb / 1,000 ft²) Fertilizer nitrogen N (%) Bag weight (lb) Price per bag (optional)

Calculated result

12.5 lb product · 1 bags

2.5 lb actual nitrogen target

20% N analysis

Bag price not entered

Show the working

1. Nitrogen target = 5,000 ÷ 1,000 × 0.5 = 2.5 lb N.
2. Product = 2.5 ÷ 0.2 = 12.5 lb.

This converts a chosen nitrogen target into product weight. Follow soil-test, label, local nutrient and application requirements; do not infer a safe rate from this calculator.

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