Free Agricultural Calculators

Plan smarter. Farm better.

184 free calculators for fertilizer rates, seed rates, crop yields, livestock management, irrigation, and farm economics.

Calculator categories

Choose a category to find the right calculator for your operation.

NPK rates, lime, compost, and nutrient calculators for 22 crops.

Seed rates, plant spacing, germination, and cost per acre.

When to plant 44 crops by USDA hardiness zone.

Yield per acre, harvest loss, grain moisture, and storage.

Feed conversion, weight, stocking rate, hay, and gestation.

Drip, sprinkler, water cost, pond sizing, and well yield.

Profit/loss, break-even, land value, loans, and ROI.

Bushels to tons, acres to hectares, lbs/acre to kg/ha.