1 How many trees?
2 Which fertilizers do you plan to buy?
Tap a fertilizer you plan to buy — pick as many as you like, across any category.
Total quantity for your whole plantation, split evenly across your trees.
Pick fertilizers above to see the total for your plantation and grams per tree.
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Want a full recommended dose instead?
Use the Fertilizer Dose & Mix Calculator for a complete age-scaled NPK + organic plan based on your crop and state.
Not sure how many trees you have?
Use the Tree Spacing & Count Calculator to estimate tree count from your field size and spacing.
Grams Per Tree — Answered
How do I know how much fertilizer each tree gets from a bag?
Divide the total weight of fertilizer you're applying (bags × bag size) by your tree count. This calculator does that automatically, in grams per tree, once you enter your tree count and the bags you have.
Does this calculator work for crops other than Areca or coconut?
Yes. This calculator only needs your tree count and the fertilizer bags you have — it doesn't use any crop-specific recommendation, so it works for any tree or plantation crop.
What is the difference between this and the Fertilizer Dose & Mix Calculator?
The Fertilizer Dose & Mix Calculator recommends how much fertilizer to buy based on your crop and state's published reference. This Quick Fertilizer Calculator works the other way around — you already have specific bags, and it tells you what each tree gets.
Can I select more than one fertilizer at a time?
Yes — pick as many fertilizers and manures as you like, across any category, and the calculator shows grams per tree for each one plus the combined nutrient total per tree.
Is this Quick Fertilizer Calculator free to use?
Yes — completely free, works directly in your browser, and doesn't require signup or an app download.