Lawn fertilizer calculator
How much product a lawn takes, how many bags to load and what it delivers. Pricing the treatment too? Read the treatment pricing guide.
0.23 acres
Analysis on the bag (N-P-K)
Many programs use 0.5–1 lb per application. Check the label and your state’s rules.
Product for this lawn
31.3 lb
3.13 lb per 1,000 sq ft
Bags
0.63
Buy 1 × 50 lb
Delivered per 1,000 sq ft
0.75 lb N
0.00 lb P₂O₅ · 0.19 lb K₂O
The product label and your state’s fertilizer laws always come first. Some states ban phosphorus on established lawns or limit application dates and amounts.
Questions
How much fertilizer do I need per 1,000 sq ft?
Divide the nitrogen you want by the product’s nitrogen percentage. For 0.75 lb of N with a 24-0-6 product: 0.75 ÷ 0.24 = 3.1 lb of product per 1,000 sq ft.
What do the three numbers on the bag mean?
The percentage by weight of nitrogen (N), phosphate (P₂O₅) and potash (K₂O). A 50 lb bag of 24-0-6 holds 12 lb of nitrogen, no phosphate and 3 lb of potash.
Do state laws limit how much I can apply?
Often, yes. Several states limit nitrogen per application, ban phosphorus on established turf unless a soil test shows a need, and set blackout dates. Follow the label and your state’s rules.
Keep application records without the paperwork
In GroundsQuote the crew’s app works out each lawn’s amounts and records what went down when they finish the job. Start free.
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