Fertilizer Calculator Select Unit System: Imperial (sq ft, lbs) Metric (m², kg) Enter Lawn / Field Area (sq ft): Application Rate (lbs/1000 sq ft): Fertilizer NPK Ratio: 10-10-10 (Balanced) 16-4-8 (Lawn) 5-10-10 (Flowers) 8-16-24 (Vegetables) Custom NPK Nitrogen (%): Phosphorus (%): Potassium (%): Calculate Fertilizer Amount Reset 📥 Download Results as PDF
