Agriculture & garden
Seed, spacing, irrigation and fertilizer calculators for growers.
8 tools in this category
Field arithmetic that usually happens on the back of a feed bag: how many plants fit a plot at a given spacing, how much fertilizer a kg/ha target needs from the grade printed on the bag, and how much product goes into one spray tank. Areas can be entered in square metres, ari or hectares, because a kitchen garden and a five-hectare field deserve the same tool. Nothing here recommends a dose or a nutrient target — those come from the product label and from a soil analysis for your own parcel. The calculators only rearrange the numbers you enter, in your browser, and the plant-protection pages put the label warnings in front of the result rather than in a footnote.
Seed Rate Calculator
Seeding rate in kg/ha from target plant density, thousand-seed weight, germination and purity.
Agriculture & garden
Irrigation Water Calculator
Water needed for an irrigation depth in litres and m³, plus the run time from drip or sprinkler rate.
Agriculture & garden
Plant Spacing Calculator
How many plants fit your plot at a given row and in-row spacing, with density per m² and per hectare.
Agriculture & garden
Fertilizer Calculator
Turn a kg/ha nutrient target and an NPK grade into the fertilizer rate, total kilograms and bag count.
Agriculture & garden
Grain Moisture Shrink Calculator
What a wet lot weighs after drying to the moisture you are paid at, with the water removed and the shrink percentage.
Agriculture & garden
Crop Yield Calculator
Scale a weighed sample harvest to t/ha and to the whole field, corrected to standard moisture.
Agriculture & garden
Spray Mix Calculator
Convert a label dose per hectare or per 100 L into the product for one tank, the number of tanks and the total.
Agriculture & garden
Land Unit Converter
Convert jutro, lanac, square fathoms, dunums, ari and hectares — the land measures still used in listings.
Agriculture & garden