Lawn Fertilizer Application Rate Calculator (By N-P-K Ratio)

Estimate granular fertilizer weight and bag requirements based on N-P-K percentages.

Interactive Material & Cost Estimator

Coverage Rate Mode • Pounds

1. Select Project Area Shape

Length (Feet)

Width (Feet)

Waste / Cut / Compaction Buffer

2. Select Package / Unit Size

Price / Unit ($)

Contractor / Bulk ($)

Delivery ($)

Estimated Material Needed 200 sq ft

Net + Buffer Area 2.04 55.0 base sq ft

Coverage Per Package 2.75 sq ft per unit (standard)

Total Units / Packages to Buy 110 bags

Waste Buffer Included ~1.96 pallets

Estimated Project Material Cost Best Value

Retail Package Total $547.80 Before local sales tax

With Delivery / Bulk $191.08 Includes delivery

Instant pre-calculated material estimates for common US residential project sizes before compaction buffer:

Typical US Project	Area	Depth	Volume	Weight	Store Bags
Standard Lawn (5,000 sq ft @ 29-0-4)	5,000 sq ft	1.0 lb N / 1k	17 lbs product	17 lbs	1 bag (15 lb)

Fertilizer Lbs = (Target N per 1,000 sq ft ÷ % Nitrogen in Bag) × (Total Sq Ft ÷ 1,000)

Standard lawn application aims for 1.0 lb of actual nitrogen per 1,000 sq ft using balanced N-P-K fertilizers like 29-0-4.

N (Nitrogen) promotes green leaf growth, P (Phosphorus) builds root systems, and K (Potassium) enhances drought resistance.

Never exceed 1.0 lb of actual nitrogen per 1,000 sq ft in a single application.