Farming Calculators
Last updated: September 2026
Irrigation Water Calculator
Estimate seasonal irrigation water needs and total water costs for any crop and field size.
Soil pH Adjustment Calculator
Estimate how many tons of agricultural lime (to raise pH) or elemental sulfur (to lower pH) your field needs, based on current and target pH values, field size, soil type, and organic matter content.
Seed Planting Rate Calculator
Calculate the total seed quantity needed for a field including a buffer for germination losses, wastage, and seeder calibration.
Farm Break-Even Analysis Calculator
Calculate the minimum crop price per bushel needed to cover all fixed and variable production costs on your farm.
Fertilizer Cost Calculator
Estimates total fertilizer expenditure for a field based on N-P-K application rates, field size, and product type.
Irrigation Water Requirement Calculator
Calculate daily irrigation water requirement in gallons based on crop water demand (Kc Γ reference ET), rainfall, system efficiency, and field area.
Farm Loan Payment Calculator
Calculate monthly, seasonal, or annual loan payments for farm land, equipment, or operating credit.
Harvest Timing Calculator
Estimate the optimal harvest date for your crop by combining planting date, growing degree day accumulation, and field drying rate.
Farm Equipment Depreciation Calculator
Calculate the annual tax-deductible depreciation on farm equipment using purchase price, salvage value, usage intensity, and your tax rate.
Crop Insurance Premium Calculator
Estimate your annual crop insurance premium based on insured acres, APH yield, price election, coverage level, and county risk.
Fertilizer Application Rate Calculator
Calculate the total fertilizer required for a field by multiplying field size in hectares by the recommended application rate in kilograms per hectare.
Farm Profitability Calculator
Determine your net profit per acre by subtracting variable, fixed, and labor costs from total farm revenue.
Pesticide Mixing Calculator
Determine how much pesticide concentrate to add to your spray tank for a given field area, application rate, and tank size.
Pasture Stocking Rate Calculator
Calculates how many animal units a pasture can sustainably support across a grazing season.