Quick, free calculators for everyday farm decisions — how much fertilizer to buy, how many plants to order, how to space your rows, and whether this season will turn a profit. No signup, works on any phone.
Location-aware agronomic nutrient & fertilizer decision support, mirroring the recommendation logic used in the AgriBase app.
Recommendation
The web calculator follows the supplied AgriBase engine: field area is normalized to hectares; recommendations match crop + stage, then prefer region, country and finally GLOBAL rules. Soil adjustments are applied only when soil-test values are supplied.
Find out how many plants (or how much seed) you need for your field, based on row and plant spacing.
You need
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This gives a theoretical maximum population — actual germination rate and thinning will reduce your final stand count somewhat.
Pick a crop for typical recommended spacing, or enter your own — see the resulting plant density per hectare and per acre.
Plant density
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Presets are general starting points — adjust for your specific variety, soil fertility and local recommendations.
Estimate your revenue, total costs and profit for a season, plus your profit margin.
Estimated profit
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Use consistent units throughout (e.g. all in kilograms, or all in bags) — the calculator doesn't convert between units for you.
We're building these next — check back, or download the app to get notified when they launch.
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