Calculate the total quantity of fertilizer needed for your field, and how much to apply per split, based on your land area and recommended dose.
How to Use the Fertilizer Calculator
Enter your "Land Area (acres)".
Enter the "Recommended Dose (kg/acre)" for your crop - get this from your local agriculture extension office, soil test report, or seed packet instructions.
Enter the "Number of Applications/Splits" you plan to divide the dose into over the season.
Click "Calculate" to see the total fertilizer needed and the quantity for each application.
Frequently Asked Questions
The correct fertilizer dose depends heavily on your soil's existing nutrient levels, crop variety, and local growing conditions - a generic recommendation could easily be wrong for your field. Always use a soil test report or your local agriculture extension office's recommendation as the input dose here.
Splitting the total dose across the growing season (e.g. at sowing, tillering, and flowering) helps match nutrient availability to the crop's actual uptake needs at each stage, and reduces nutrient loss compared to applying everything at once.
Yes - as long as your "Recommended Dose" is expressed as kg of that specific fertilizer product (like Urea, DAP, or a blended NPK product) per acre, this calculator scales it to your total land area.
Yes, it's completely free and requires no sign-up.