About

Agricultural application requires strict adherence to label rates to ensure crop safety, pest control efficacy, and environmental compliance. This calculator assists farmers and landscapers in determining the precise volume of product required for a specific treatment area or sprayer tank size.

The tool includes a safety logic engine that compares the Total Mix Required against the Tank Capacity, alerting the user to the number of refills (loads) necessary to complete the job. It supports conversion between rate-per-acre, rate-per-hectare, and rate-per-1000-sqft.

Formulas

The total product required is calculated by multiplying the area by the chemical rate:

Total Product = Area × Rate

To determine the number of tank loads required:

Loads = Area × Carrier RateTank Size

Reference Data

Variable	Symbol	Common Unit
Application Rate	R	oz/acre, L/ha
Treatment Area	A	Acres, ha, sq ft
Tank Capacity	V_tank	Gallons, Liters
Carrier Volume	V_water	GPA (Gallons Per Acre)

Frequently Asked Questions

GPA (Gallons Per Acre) is the total amount of liquid (water + chemical) your sprayer puts out over an acre. You must calibrate your sprayer to know this number before using the calculator.

Yes. Select "Sq Ft" or "Sq Meters" as your area unit. This is useful for backpack sprayers where you are treating small patches rather than whole fields.