Pesticide applicator calculators

Free tools with worked examples for the math that trips up the most people on the exam. Every result shows the formula and steps, and the answers come from the same unit-tested code we use in the calculation lab.

Sprayer calibration

Find gallons-per-acre from nozzle flow, speed, and swath.

Pesticide dilution

Mix a target concentration from a stock concentrate.

Application rate

Find total product and spray volume for a field.