NPK Ratio Calculator
Analyze fertilizer NPK ratios and calculate application rates. This tool helps you understand fertilizer composition and determine the right amounts for your specific needs.
Fertilizer Analysis
Application Parameters
Target NPK Ratio (Optional)
NPK Analysis Results
Enter fertilizer analysis and click calculate to see detailed NPK breakdown.
Understanding NPK Ratios
What is NPK?
NPK stands for Nitrogen (N), Phosphorus (P), and Potassium (K) - the three primary nutrients essential for plant growth. The NPK ratio on fertilizer labels indicates the percentage of each nutrient by weight.
Nutrient Functions:
- Nitrogen (N): Promotes leafy growth and green color
- Phosphorus (P): Supports root development and flowering
- Potassium (K): Enhances disease resistance and fruit quality
Choosing the Right Ratio
Different plants and growth stages require different NPK ratios. Our calculator helps you analyze fertilizer composition and determine application rates for optimal plant nutrition.
Common Ratios:
- 3-1-2: General purpose for most plants
- High N: For leafy vegetables and lawns
- High P: For flowering and fruiting plants
- High K: For root crops and winter hardiness