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Fertilizer Materials Conversion Calculator

How to Calculate Between Fertilizer Materials

The Fertilizer Materials Conversion Calculator converts weights between different fertilizer materials that provide equivalent amounts of a specific nutrient (e.g., N, P, K). The formula is:

\( \text{Output Weight} = \text{Input Weight} \times \text{Conversion Factor} \)

Select the input material, output material (must share a nutrient), enter the input value, and calculate the equivalent output weight.

Using the Fertilizer Materials Conversion Calculator

This calculator is useful for agronomy, soil science, or farming, supporting conversions for equivalent nutrient delivery across materials.

Select input material, output material, input the weight value. The calculator outputs the converted weight if a direct factor exists.

Example 1: Convert 100 kg of Ammonia, NH3 to Ammonium nitrate, NH4NO3.


  1. Input Material: Ammonia, NH3
  2. Output Material: Ammonium nitrate, NH4NO3
  3. Input: \( 100 \)
  4. Calculation: \( 100 \times 4.7 = 470 \)
  5. Result: \( 470 \, \text{kg Ammonium nitrate, NH4NO3} \)

Example 2: Convert 470 kg of Ammonium nitrate, NH4NO3 to Ammonia, NH3.


  1. Input Material: Ammonium nitrate, NH4NO3
  2. Output Material: Ammonia, NH3
  3. Input: \( 470 \)
  4. Calculation: \( 470 \times 0.2128 \approx 100 \)
  5. Result: \( 100 \, \text{kg Ammonia, NH3} \)

Use this tool for quick conversions in fertilizer planning.

Common FAQ

Below are frequently asked questions about fertilizer material conversions:

  • Q: What do the conversion factors represent?
    A: Multipliers to convert weights of materials providing the same amount of nutrient (e.g., 1 kg Ammonia equivalent to 4.7 kg Ammonium nitrate for N).
  • Q: Why might a conversion not be available?
    A: Selected materials do not share a common nutrient or the pair is not in standard tables.
  • Q: Are these factors for elemental or oxide basis?
    A: Varies by pair; e.g., for N it's elemental nitrogen content.
  • Q: How accurate is this calculator?
    A: Based on USDA standard factors, rounded to 4 decimal places.
  • Q: Can negative values be used?
    A: No, input values must be positive; invalid inputs show an error message.
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