grain

Corn Calculators

The most widely grown crop in the US, used for grain, silage, ethanol, and livestock feed. Use the free tools below to plan fertilizer rates, seeding rates, planting dates, yield estimates, and costs for your corn operation.

4 free calculators for corn across 4 categories

Fertilizer & Soil

Corn Fertilizer Calculator

Calculate exact NPK fertilizer rates for corn. Get nitrogen, phosphorus, and potassium recommendations based on yield goals and soil test results.

Seed & Planting

Corn Seeding Rate Calculator

Calculate seeding rate and seed needs for corn. Get population, spacing, and seed quantity recommendations.

Planting Date

Corn Planting Date Calculator

Calculate the optimal planting dates for corn based on your USDA zone, last frost date, and preferred start method.

Crop Yield & Harvest

Corn Yield Calculator

Calculate corn yield per acre. Estimate total harvest, yield potential, and compare to averages.

Other Crops

Wheat Soybeans Tomatoes Potatoes Cotton Rice Alfalfa Oats Barley Sorghum Sunflower Canola