Free Farming Tools & Calculators – CropBuddy
Free online calculators for farmers: acreage, planting dates, NPK fertilizer rates, and harvest yield. No signup, instant results.
Available calculators
- Acreage Calculator — Convert square feet, hectares, and square meters to acres.
- Planting Date Calculator — Optimal planting windows by crop and frost date.
- NPK Fertilizer Calculator — Calculate nitrogen, phosphorus, and potassium per acre.
- Harvest Yield Calculator — Estimate corn, soybean, and wheat yield per acre.
- Irrigation Calculator — Gallons per acre and pump hours for pivot, drip, flood.
- Seed Rate Calculator — Seeds, bags, and seed cost per acre.
- Grain Market Price Tracker — Live corn and soybean prices per bushel.