Calculators

Estimate how long to water a lawn or garden area based on area size, sprinkler flow rate, desired water depth, soil type, and season.

Calculate the amount of urea fertilizer needed based on field area, target nitrogen application rate, urea nitrogen content, and expected application efficiency.

Estimate how much bone meal is needed for a lawn or garden area based on square footage, application rate, soil phosphorus level, and number of applications.

Estimate how much blood meal to apply based on garden area, target nitrogen rate, blood meal nitrogen content, and application efficiency. This calculator returns the total blood meal needed in pounds.

Estimate how much garden lime to apply based on lawn or garden area, current soil pH, target pH, soil type, and lime material strength.

Estimate the amount of agricultural lime needed to raise soil pH based on area, current soil pH, target pH, soil texture, and lime purity rating.

Estimate the sulfur fertilizer needed based on field area, current soil sulfur level, target sulfur level, soil test depth, and sulfur source efficiency. The calculation converts the sulfur deficit in ppm to pounds of sulfur per acre for the selected soil depth, then adjusts for application efficiency and total area.

Estimate the amount of soil amendment needed based on garden area, amendment depth, soil bulk density, and amendment application rate.

Estimate how many pounds of worm castings you need based on garden area, application depth, soil mix ratio, and whether you are top dressing beds or blending castings into soil.

Estimate the total cost of manure application based on field size, application rate, hauling distance, manure type, and spreading method.

Estimate how much Epsom salt to use for plants based on the number of plants, application frequency, treatment method, and plant magnesium sensitivity. This calculator provides the total tablespoons of Epsom salt needed per application cycle.

Estimate how much potassium fertilizer product is needed based on area, target potassium application rate, fertilizer analysis, and expected application efficiency.

Estimate how much liquid fertilizer concentrate is needed based on lawn or garden area, application rate, dilution ratio, and number of applications.

Estimate how many pounds of dry fertilizer are needed based on lawn or garden area, target nitrogen application rate, fertilizer analysis, and an optional adjustment factor for application conditions.

Estimate the total amount of granular fertilizer needed based on lawn or garden area, desired application rate, number of applications, and spreader efficiency.

Calculate how much concentrated fertilizer to mix with water based on target dilution strength, final solution volume, fertilizer concentration basis, and application intensity.

Calculate how much fertilizer product to mix based on the target application rate, coverage area, nutrient concentration, and expected tank volume.

Convert fertilizer application amounts between product weight and actual nutrient supplied using fertilizer grade percentages. Enter the amount of fertilizer product, select whether you want to calculate nutrient supplied or required product, and specify the nutrient percentage from the fertilizer analysis.

Estimate the total amount of blended NPK fertilizer needed based on lawn or garden area, application rate, annual application frequency, and nutrient concentration grade.

Estimate how much nitrogen fertilizer product is needed based on area, target nitrogen application rate, fertilizer nitrogen analysis, and expected application efficiency.

Estimate the amount of phosphorus fertilizer product needed based on field size, target phosphorus application rate, fertilizer analysis, and expected application efficiency.

Estimate the total amount of fertilizer product needed for a lawn or field application based on area, target nitrogen rate, fertilizer analysis, expected nutrient use efficiency, and number of applications.

Calculate the fertilizer product application rate needed to supply a target amount of nutrient across a field area, based on fertilizer analysis and expected application efficiency.

Estimate how much area a fertilizer bag can cover based on bag weight, application rate, and product efficiency factors.

Estimate total fertilizer cost based on lawn or garden area, application rate, fertilizer price, number of applications, and product type adjustment.

Estimate how many fertilizer bags are needed based on lawn or garden area, application rate, bag coverage, and an optional waste factor.

Calculate the pounds of fertilizer product needed per acre based on the target nutrient application rate, nutrient grade in the fertilizer, field size, and an optional application efficiency adjustment.

Calculate how many pounds of fertilizer to apply based on lawn or garden area, target nitrogen rate, fertilizer analysis, and an optional application adjustment factor.

Estimate how many flower bulbs you can plant in a rectangular bed based on bed dimensions, recommended spacing, and planting pattern.

Estimate the total fertilizer needed based on lawn or garden area, target application rate, product nutrient concentration, number of applications, and a coverage adjustment factor.