Free farm tools online
Sprayer and seeding rate calculators, a U.S. pesticide product search based on EPA data and USDA cash grain bids by state.
Sprayer calculator
Work out how much product and water you need for a field, how many full tank loads that is and what goes into the last partial load.
Open tool →Seeding rate calculator
Convert a target seeding rate into lb/ac or kg/ha: seeds per acre with seeds per pound, or seeds per m² with thousand kernel weight, adjusted for germination and purity.
Open tool →Pesticide product search (U.S. EPA)
Search U.S. EPA registered pesticide products by name, crop/site or pest. Based on the EPA Pesticide Product Information System.
Open tool →Cash grain bids by state (USDA)
Corn, soybean, wheat and sorghum cash bids reported by USDA AMS for 24 states: country elevators, processors, river and terminal elevators.
Open tool →Plan and check before you go to the field
Work out the product and water for a sprayer load, convert a target plant population into a seeding rate, look up which registered products list a crop or pest, or compare reported cash grain bids in your state. Calculations run in your browser; nothing you type is sent anywhere.
In the Field Master GPS app the same tools sit next to your fields, A-B guidance, coverage maps and treatment records. A calculator never replaces the product label, and a reported bid is not an offer from a specific buyer.